Has anybody sent their kid to school with a CO2 monitor (to measure ventilation)?

[Anonymous]

Anonymous wrote:

Anonymous wrote:This is a genuine question. There's ventilation as in, is there enough air exchange of fresh air to a room, which implies dispersal of viral particles. But then there's air cleaning via filters that capture viral particles or UV light that kills them, etc. Air cleaner devices are not going to make the air 'fresher' in terms of changing the distribution of gasses. They're not gonna convert CO2 to Oxygen.

So if you have a windowless room with poor ventilation BUT with, say, three Corsi-Rosenthal boxes, aren't you still going to see high CO2 readings? And yet that reading wouldn't mean there's high viral load sitting stagnant?

Yes, that’s correct. As a parent who sent a CO2 monitor to school with my child, I factored that into my response to the numbers we saw. It’s one source of information, not the alpha and omega.

I feel bad for your child's teacher. What else do you do to harass them? Did you also provide air cleaners and clorox wipes too - that would be far more helpful.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:This is a genuine question. There's ventilation as in, is there enough air exchange of fresh air to a room, which implies dispersal of viral particles. But then there's air cleaning via filters that capture viral particles or UV light that kills them, etc. Air cleaner devices are not going to make the air 'fresher' in terms of changing the distribution of gasses. They're not gonna convert CO2 to Oxygen.

So if you have a windowless room with poor ventilation BUT with, say, three Corsi-Rosenthal boxes, aren't you still going to see high CO2 readings? And yet that reading wouldn't mean there's high viral load sitting stagnant?

Yes, that’s correct. As a parent who sent a CO2 monitor to school with my child, I factored that into my response to the numbers we saw. It’s one source of information, not the alpha and omega.

I feel bad for your child's teacher. What else do you do to harass them? Did you also provide air cleaners and clorox wipes too - that would be far more helpful.

You already know MCPS won't allow air cleaners. Why would you feel bad for a teacher who has parents that care about their health? You prefer long term subs in classrooms?

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:This is a genuine question. There's ventilation as in, is there enough air exchange of fresh air to a room, which implies dispersal of viral particles. But then there's air cleaning via filters that capture viral particles or UV light that kills them, etc. Air cleaner devices are not going to make the air 'fresher' in terms of changing the distribution of gasses. They're not gonna convert CO2 to Oxygen.

So if you have a windowless room with poor ventilation BUT with, say, three Corsi-Rosenthal boxes, aren't you still going to see high CO2 readings? And yet that reading wouldn't mean there's high viral load sitting stagnant?

Yes, that’s correct. As a parent who sent a CO2 monitor to school with my child, I factored that into my response to the numbers we saw. It’s one source of information, not the alpha and omega.

I feel bad for your child's teacher. What else do you do to harass them? Did you also provide air cleaners and clorox wipes too - that would be far more helpful.

You already know MCPS won't allow air cleaners. Why would you feel bad for a teacher who has parents that care about their health? You prefer long term subs in classrooms?

I'd prefer who ever is the best fit for my child.

If you cared about the teacher's health, you'd mask your kid, send in an air cleaner, clorox wipes, kleenex and much more... And, volunteer in the classroom since its so safe.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:Yes. Back in the fall of 2021 before the vaccine. Our teacher was very covid conscious and proactive (open windows, air cleaners, etc.) and appreciated that we sent it in.

My DD monitored it and it never got high readings. But she did have to wear a jacket that whole winter.

What country are you in? I got my vaccine december 2020 and my non essential husband got it March 2021

Vaccines don't stop transmission they only help with severe cases. It is bizarre to do this.

We all felt better protected against hospitalization/death after we got vaccinated. Until that point, we were very careful. Have loosened up since then. No more CO2 monitors.

We have always been careful as it’s not hospitalization I’m worried about but transmission. But, monitors do nothing.

Why are you worried about transmission? That should never have been the metric — the metric should have always been outcomes from the virus. Right now, the vast majority of people are not getting severely ill from COVID. So why are you still so concerned?

I was sick for a few weeks. It was miserable. I don’t want it again. Clearly you are ok with being sick but others are not.

Yes I am. But I am a sane human being . . .

No you're not. Sane people avoid pandemics like the plague.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:Yes. Back in the fall of 2021 before the vaccine. Our teacher was very covid conscious and proactive (open windows, air cleaners, etc.) and appreciated that we sent it in.

My DD monitored it and it never got high readings. But she did have to wear a jacket that whole winter.

What country are you in? I got my vaccine december 2020 and my non essential husband got it March 2021

Vaccines don't stop transmission they only help with severe cases. It is bizarre to do this.

We all felt better protected against hospitalization/death after we got vaccinated. Until that point, we were very careful. Have loosened up since then. No more CO2 monitors.

We have always been careful as it’s not hospitalization I’m worried about but transmission. But, monitors do nothing.

Why are you worried about transmission? That should never have been the metric — the metric should have always been outcomes from the virus. Right now, the vast majority of people are not getting severely ill from COVID. So why are you still so concerned?

I was sick for a few weeks. It was miserable. I don’t want it again. Clearly you are ok with being sick but others are not.

Yes I am. But I am a sane human being . . .

No you're not. Sane people avoid pandemics like the plague.

So 95% of the US is insane now and you're the sane one?? Ok then. Carry on.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:LOL, dc moms are crazy

Really? So the kids in this area are stupid? They aren't smart? They haven't learned how covid spreads or how to keep people safe? Interesting that so many stupid people live in Montgomery County but we are supposed to have one of the best school systems. Must not be so great if parents are all so stupid.

A co2 monitor isn't going to help without many other layers in place. This is theater for attention.

Right. Other layers are in place. This is just another data point.

Jeez. People are just looking for things to complain about.

What are you talking about! There is no mitigation this school year. No masking, no distancing, no testing, no nothing. Plan to get Covid multiple times. What is the big deal, clearly you are ok with Covid?

Tests are available. Masks are available. Vaccines & boosters are available. HVAC systems have been upgraded/supplemented.

If you have concerns about a specific classroom there is no harm bringing in a CO2 monitor to verify adequate ventilation.

Available means nothing if not used. Same thing with a co2 monitor if mcps or the monitoring parent does not pay for repairs.

If MCPS can't update/modify the HVAC system to increase ventilation, then the teacher can open the window.

You’d need someone to properly study the airflow in the classroom to see if opening the windows will actually improve the air quality.

Ventilation is the best way to improve air quality.

If the ventilation is poor (high co2 levels) then opening the windows will help until they upgrade/modify HVAC system.

It depends on a number of factors actually. And it would be indefinite because it takes MCPS forever to upgrade. You really want your kids sitting in extremely hot or cold classrooms for sone marginal improvement in ventilation? 90 degrees inside while wearing their KN95?

If the co2 level is too high, then opening the windows absolutely will bring down the levels.

The weather isn’t that bad during the school year. My kid survived having the window open all last year.

I ignore anyone who talks in such absolute terms because again, it depends on a number of factors. Buh bye.

That’s just how ventilation works.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:LOL, dc moms are crazy

Really? So the kids in this area are stupid? They aren't smart? They haven't learned how covid spreads or how to keep people safe? Interesting that so many stupid people live in Montgomery County but we are supposed to have one of the best school systems. Must not be so great if parents are all so stupid.

A co2 monitor isn't going to help without many other layers in place. This is theater for attention.

Right. Other layers are in place. This is just another data point.

Jeez. People are just looking for things to complain about.

What are you talking about! There is no mitigation this school year. No masking, no distancing, no testing, no nothing. Plan to get Covid multiple times. What is the big deal, clearly you are ok with Covid?

Tests are available. Masks are available. Vaccines & boosters are available. HVAC systems have been upgraded/supplemented.

If you have concerns about a specific classroom there is no harm bringing in a CO2 monitor to verify adequate ventilation.

Available means nothing if not used. Same thing with a co2 monitor if mcps or the monitoring parent does not pay for repairs.

If MCPS can't update/modify the HVAC system to increase ventilation, then the teacher can open the window.

You’d need someone to properly study the airflow in the classroom to see if opening the windows will actually improve the air quality.

Ventilation is the best way to improve air quality.

If the ventilation is poor (high co2 levels) then opening the windows will help until they upgrade/modify HVAC system.

It depends on a number of factors actually. And it would be indefinite because it takes MCPS forever to upgrade. You really want your kids sitting in extremely hot or cold classrooms for sone marginal improvement in ventilation? 90 degrees inside while wearing their KN95?

If the co2 level is too high, then opening the windows absolutely will bring down the levels.

The weather isn’t that bad during the school year. My kid survived having the window open all last year.

I ignore anyone who talks in such absolute terms because again, it depends on a number of factors. Buh bye.

That’s just how ventilation works.

But will wi dies open on a 30 degree or 90 degree day meaningfully reduce covid? If not what’s the point beyond driving more teachers away.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:This is a genuine question. There's ventilation as in, is there enough air exchange of fresh air to a room, which implies dispersal of viral particles. But then there's air cleaning via filters that capture viral particles or UV light that kills them, etc. Air cleaner devices are not going to make the air 'fresher' in terms of changing the distribution of gasses. They're not gonna convert CO2 to Oxygen.

So if you have a windowless room with poor ventilation BUT with, say, three Corsi-Rosenthal boxes, aren't you still going to see high CO2 readings? And yet that reading wouldn't mean there's high viral load sitting stagnant?

Yes, that’s correct. As a parent who sent a CO2 monitor to school with my child, I factored that into my response to the numbers we saw. It’s one source of information, not the alpha and omega.

I feel bad for your child's teacher. What else do you do to harass them? Did you also provide air cleaners and clorox wipes too - that would be far more helpful.

As above: I told her I'd be doing this. She didn't object.

Three months later, in January, when the COVID cases in her class were out of control (my kid was at home for the whole month--the rates were just insane, I wouldn't send him into a school with that much norovirus) she messaged me and another parent midday to say that they had a shortage of high-quality kids' masks because the district had not delivered, and did I know where she could get some? I did--my house. We delivered about 100 of them to her in under an hour.

And yes to the air cleaner and all cleaning products she requested. So no, you don't need to feel bad for her. I consider her an important part of our child's life and we treat her accordingly, including that she shouldn't have to breathe crapped-up air, a topic she happens to agree about.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:This is a genuine question. There's ventilation as in, is there enough air exchange of fresh air to a room, which implies dispersal of viral particles. But then there's air cleaning via filters that capture viral particles or UV light that kills them, etc. Air cleaner devices are not going to make the air 'fresher' in terms of changing the distribution of gasses. They're not gonna convert CO2 to Oxygen.

So if you have a windowless room with poor ventilation BUT with, say, three Corsi-Rosenthal boxes, aren't you still going to see high CO2 readings? And yet that reading wouldn't mean there's high viral load sitting stagnant?

Yes, that’s correct. As a parent who sent a CO2 monitor to school with my child, I factored that into my response to the numbers we saw. It’s one source of information, not the alpha and omega.

I feel bad for your child's teacher. What else do you do to harass them? Did you also provide air cleaners and clorox wipes too - that would be far more helpful.

As above: I told her I'd be doing this. She didn't object.

Three months later, in January, when the COVID cases in her class were out of control (my kid was at home for the whole month--the rates were just insane, I wouldn't send him into a school with that much norovirus) she messaged me and another parent midday to say that they had a shortage of high-quality kids' masks because the district had not delivered, and did I know where she could get some? I did--my house. We delivered about 100 of them to her in under an hour.

And yes to the air cleaner and all cleaning products she requested. So no, you don't need to feel bad for her. I consider her an important part of our child's life and we treat her accordingly, including that she shouldn't have to breathe crapped-up air, a topic she happens to agree about.

Sounds pretty misreable for your kid and the co2 monitor did nothing.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:LOL, dc moms are crazy

Really? So the kids in this area are stupid? They aren't smart? They haven't learned how covid spreads or how to keep people safe? Interesting that so many stupid people live in Montgomery County but we are supposed to have one of the best school systems. Must not be so great if parents are all so stupid.

A co2 monitor isn't going to help without many other layers in place. This is theater for attention.

Right. Other layers are in place. This is just another data point.

Jeez. People are just looking for things to complain about.

What are you talking about! There is no mitigation this school year. No masking, no distancing, no testing, no nothing. Plan to get Covid multiple times. What is the big deal, clearly you are ok with Covid?

Tests are available. Masks are available. Vaccines & boosters are available. HVAC systems have been upgraded/supplemented.

If you have concerns about a specific classroom there is no harm bringing in a CO2 monitor to verify adequate ventilation.

Available means nothing if not used. Same thing with a co2 monitor if mcps or the monitoring parent does not pay for repairs.

If MCPS can't update/modify the HVAC system to increase ventilation, then the teacher can open the window.

You’d need someone to properly study the airflow in the classroom to see if opening the windows will actually improve the air quality.

Ventilation is the best way to improve air quality.

If the ventilation is poor (high co2 levels) then opening the windows will help until they upgrade/modify HVAC system.

It depends on a number of factors actually. And it would be indefinite because it takes MCPS forever to upgrade. You really want your kids sitting in extremely hot or cold classrooms for sone marginal improvement in ventilation? 90 degrees inside while wearing their KN95?

If the co2 level is too high, then opening the windows absolutely will bring down the levels.

The weather isn’t that bad during the school year. My kid survived having the window open all last year.

I ignore anyone who talks in such absolute terms because again, it depends on a number of factors. Buh bye.

That’s just how ventilation works.

But will wi dies open on a 30 degree or 90 degree day meaningfully reduce covid? If not what’s the point beyond driving more teachers away.

Yes, open windows greatly improve ventilation - and meaningfully reduces transmission.

https://www.washingtonpost.com/opinions/2020/08/27/want-buy-schools-time-open-windows/
“But when we opened windows, even just six inches, we consistently saw air-exchange rates above the “excellent” target of five air changes per hour, with some rooms getting much more.”

https://www.reuters.com/world/europe/italian-study-shows-ventilation-can-cut-school-covid-cases-by-82-2022-03-22/
“With applications guaranteeing a complete replacement of the air in a classroom 2.4 times in an hour, infections were reduced by 40%. They were lowered by 66.8% with four air replacements per hour and by 82.5% with six air replacements, the study showed.”

[Anonymous]

More information on opening windows:

https://www.medicalnewstoday.com/articles/schools-will-need-more-than-fresh-air-to-stop-covid-19-mit-study#Examining-the-effects-of-body-heat

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:LOL, dc moms are crazy

Really? So the kids in this area are stupid? They aren't smart? They haven't learned how covid spreads or how to keep people safe? Interesting that so many stupid people live in Montgomery County but we are supposed to have one of the best school systems. Must not be so great if parents are all so stupid.

A co2 monitor isn't going to help without many other layers in place. This is theater for attention.

Right. Other layers are in place. This is just another data point.

Jeez. People are just looking for things to complain about.

What are you talking about! There is no mitigation this school year. No masking, no distancing, no testing, no nothing. Plan to get Covid multiple times. What is the big deal, clearly you are ok with Covid?

Tests are available. Masks are available. Vaccines & boosters are available. HVAC systems have been upgraded/supplemented.

If you have concerns about a specific classroom there is no harm bringing in a CO2 monitor to verify adequate ventilation.

Available means nothing if not used. Same thing with a co2 monitor if mcps or the monitoring parent does not pay for repairs.

If MCPS can't update/modify the HVAC system to increase ventilation, then the teacher can open the window.

You’d need someone to properly study the airflow in the classroom to see if opening the windows will actually improve the air quality.

Ventilation is the best way to improve air quality.

If the ventilation is poor (high co2 levels) then opening the windows will help until they upgrade/modify HVAC system.

It depends on a number of factors actually. And it would be indefinite because it takes MCPS forever to upgrade. You really want your kids sitting in extremely hot or cold classrooms for sone marginal improvement in ventilation? 90 degrees inside while wearing their KN95?

If the co2 level is too high, then opening the windows absolutely will bring down the levels.

The weather isn’t that bad during the school year. My kid survived having the window open all last year.

I ignore anyone who talks in such absolute terms because again, it depends on a number of factors. Buh bye.

That’s just how ventilation works.

But will wi dies open on a 30 degree or 90 degree day meaningfully reduce covid? If not what’s the point beyond driving more teachers away.

Yes, open windows greatly improve ventilation - and meaningfully reduces transmission.

https://www.washingtonpost.com/opinions/2020/08/27/want-buy-schools-time-open-windows/
“But when we opened windows, even just six inches, we consistently saw air-exchange rates above the “excellent” target of five air changes per hour, with some rooms getting much more.”

https://www.reuters.com/world/europe/italian-study-shows-ventilation-can-cut-school-covid-cases-by-82-2022-03-22/
“With applications guaranteeing a complete replacement of the air in a classroom 2.4 times in an hour, infections were reduced by 40%. They were lowered by 66.8% with four air replacements per hour and by 82.5% with six air replacements, the study showed.”

What were the differences between east and west facing windows? Just curious. We didn’t have AC as a kid and my east facing bedroom was so stuffy and stagnant at night while my sisters west facing room got a wonderful breeze.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:LOL, dc moms are crazy

Really? So the kids in this area are stupid? They aren't smart? They haven't learned how covid spreads or how to keep people safe? Interesting that so many stupid people live in Montgomery County but we are supposed to have one of the best school systems. Must not be so great if parents are all so stupid.

A co2 monitor isn't going to help without many other layers in place. This is theater for attention.

Right. Other layers are in place. This is just another data point.

Jeez. People are just looking for things to complain about.

What are you talking about! There is no mitigation this school year. No masking, no distancing, no testing, no nothing. Plan to get Covid multiple times. What is the big deal, clearly you are ok with Covid?

Tests are available. Masks are available. Vaccines & boosters are available. HVAC systems have been upgraded/supplemented.

If you have concerns about a specific classroom there is no harm bringing in a CO2 monitor to verify adequate ventilation.

Available means nothing if not used. Same thing with a co2 monitor if mcps or the monitoring parent does not pay for repairs.

If MCPS can't update/modify the HVAC system to increase ventilation, then the teacher can open the window.

You’d need someone to properly study the airflow in the classroom to see if opening the windows will actually improve the air quality.

Ventilation is the best way to improve air quality.

If the ventilation is poor (high co2 levels) then opening the windows will help until they upgrade/modify HVAC system.

It depends on a number of factors actually. And it would be indefinite because it takes MCPS forever to upgrade. You really want your kids sitting in extremely hot or cold classrooms for sone marginal improvement in ventilation? 90 degrees inside while wearing their KN95?

If the co2 level is too high, then opening the windows absolutely will bring down the levels.

The weather isn’t that bad during the school year. My kid survived having the window open all last year.

I ignore anyone who talks in such absolute terms because again, it depends on a number of factors. Buh bye.

That’s just how ventilation works.

But will wi dies open on a 30 degree or 90 degree day meaningfully reduce covid? If not what’s the point beyond driving more teachers away.

Yes, open windows greatly improve ventilation - and meaningfully reduces transmission.

https://www.washingtonpost.com/opinions/2020/08/27/want-buy-schools-time-open-windows/
“But when we opened windows, even just six inches, we consistently saw air-exchange rates above the “excellent” target of five air changes per hour, with some rooms getting much more.”

https://www.reuters.com/world/europe/italian-study-shows-ventilation-can-cut-school-covid-cases-by-82-2022-03-22/
“With applications guaranteeing a complete replacement of the air in a classroom 2.4 times in an hour, infections were reduced by 40%. They were lowered by 66.8% with four air replacements per hour and by 82.5% with six air replacements, the study showed.”

What were the differences between east and west facing windows? Just curious. We didn’t have AC as a kid and my east facing bedroom was so stuffy and stagnant at night while my sisters west facing room got a wonderful breeze.

Too bad you didn’t have a co2 monitor to measure ventilation so you could compare.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:This is a genuine question. There's ventilation as in, is there enough air exchange of fresh air to a room, which implies dispersal of viral particles. But then there's air cleaning via filters that capture viral particles or UV light that kills them, etc. Air cleaner devices are not going to make the air 'fresher' in terms of changing the distribution of gasses. They're not gonna convert CO2 to Oxygen.

So if you have a windowless room with poor ventilation BUT with, say, three Corsi-Rosenthal boxes, aren't you still going to see high CO2 readings? And yet that reading wouldn't mean there's high viral load sitting stagnant?

Yes, that’s correct. As a parent who sent a CO2 monitor to school with my child, I factored that into my response to the numbers we saw. It’s one source of information, not the alpha and omega.

I feel bad for your child's teacher. What else do you do to harass them? Did you also provide air cleaners and clorox wipes too - that would be far more helpful.

As above: I told her I'd be doing this. She didn't object.

Three months later, in January, when the COVID cases in her class were out of control (my kid was at home for the whole month--the rates were just insane, I wouldn't send him into a school with that much norovirus) she messaged me and another parent midday to say that they had a shortage of high-quality kids' masks because the district had not delivered, and did I know where she could get some? I did--my house. We delivered about 100 of them to her in under an hour.

And yes to the air cleaner and all cleaning products she requested. So no, you don't need to feel bad for her. I consider her an important part of our child's life and we treat her accordingly, including that she shouldn't have to breathe crapped-up air, a topic she happens to agree about.

Sounds pretty misreable for your kid and the co2 monitor did nothing.

Yep, where exactly did the CO2 monitoring have any influence on any of the above?

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:LOL, dc moms are crazy

Really? So the kids in this area are stupid? They aren't smart? They haven't learned how covid spreads or how to keep people safe? Interesting that so many stupid people live in Montgomery County but we are supposed to have one of the best school systems. Must not be so great if parents are all so stupid.

A co2 monitor isn't going to help without many other layers in place. This is theater for attention.

Right. Other layers are in place. This is just another data point.

Jeez. People are just looking for things to complain about.

What are you talking about! There is no mitigation this school year. No masking, no distancing, no testing, no nothing. Plan to get Covid multiple times. What is the big deal, clearly you are ok with Covid?

Tests are available. Masks are available. Vaccines & boosters are available. HVAC systems have been upgraded/supplemented.

If you have concerns about a specific classroom there is no harm bringing in a CO2 monitor to verify adequate ventilation.

Available means nothing if not used. Same thing with a co2 monitor if mcps or the monitoring parent does not pay for repairs.

If MCPS can't update/modify the HVAC system to increase ventilation, then the teacher can open the window.

You’d need someone to properly study the airflow in the classroom to see if opening the windows will actually improve the air quality.

Ventilation is the best way to improve air quality.

If the ventilation is poor (high co2 levels) then opening the windows will help until they upgrade/modify HVAC system.

It depends on a number of factors actually. And it would be indefinite because it takes MCPS forever to upgrade. You really want your kids sitting in extremely hot or cold classrooms for sone marginal improvement in ventilation? 90 degrees inside while wearing their KN95?

If the co2 level is too high, then opening the windows absolutely will bring down the levels.

The weather isn’t that bad during the school year. My kid survived having the window open all last year.

I ignore anyone who talks in such absolute terms because again, it depends on a number of factors. Buh bye.

That’s just how ventilation works.

But will wi dies open on a 30 degree or 90 degree day meaningfully reduce covid? If not what’s the point beyond driving more teachers away.

Yes, open windows greatly improve ventilation - and meaningfully reduces transmission.

https://www.washingtonpost.com/opinions/2020/08/27/want-buy-schools-time-open-windows/
“But when we opened windows, even just six inches, we consistently saw air-exchange rates above the “excellent” target of five air changes per hour, with some rooms getting much more.”

https://www.reuters.com/world/europe/italian-study-shows-ventilation-can-cut-school-covid-cases-by-82-2022-03-22/
“With applications guaranteeing a complete replacement of the air in a classroom 2.4 times in an hour, infections were reduced by 40%. They were lowered by 66.8% with four air replacements per hour and by 82.5% with six air replacements, the study showed.”

Have you sent these articles to the MCPS building folks? They keep claiming opening windows works against the HVAC system whenever parents ask but clearly they are wrong. Guessing you don’t need much of a science background or degree for those jobs, lol.