not quite. Statistically independent is about two data series, not two different logical arguments. |
Point 1 - I assume that is because of HIGH SCHOOL networks, not middle school networks. The networking difference between Hardy/Wilson and Deal/Wilson is going to be trivial. Point 2 - I see no evidence that DCPS actually intends that. They are putting money and effort into new EOTP middle schools. I really do not think they intend to indefinitely increase Hardy's enrollment. |
two different logical arguments each based on statistical analysis . For @%*& sake! ![]() |
and yes -- one a statistical argument OP presented, the other not backed with data but that does not negate the argument or its premise even if it's more challenging to quantify. |
Guys, this bickering over econometrics jargon is coming across as a bit immature/insecure. Many of us on this board have economics backgrounds, but the best economists are able to argue convincingly using layman's language. Try it. Save the rest for your next AER submission. |
OP here. I'm not ignoring other posters. I will address them (I hope) in due time. Some of these questions/requests deserve more consideration than a flippant reply. To this poster, my guess from eyeballing the data is that a similar story is true at Stuart-Hobson. (I wanted to include SH when putting the data together but I could only get so much done in the two hours before work.) This is just a guess, but I'll pull them later today and provide a brief conclusion. |
Yes, which means they are not "statistically independent". They are logically orthogonal, though based on data. or not. |
I am the PP who first said "orthogonal" and I was addressing OP, who says he is an economist. I was not trying to convince anyone else of anything. |
Just one edit to my very last paragraph. I should have said, people with money, who are at least somewhat risk averse. Risk aversion is commonly assumed, and I think it's a valid assumption here. Why take a risk or accept compromise when private school or Bethesda are reasonably within reach, albeit not without some cost? |
OP here: it was a correct usage of orthogonal and I immediately understand what the PP was saying. For the others, think of orthogonal as "unrelated" or "neither here nor there." (I think the source in linear al, by the way. Not statistics. I think.) Enough on this point.
By the way, although I only "say" I'm an economist. I am, in fact, an economist. You don't have to believe and it should have no bearing on the merits of my comments. I just included it by way of explanation for why I'm playing with the numbers for a school with which I have no affiliation. |
Just one edit to my very last paragraph. I should have said, people with money, who are at least somewhat risk averse. Risk aversion is commonly assumed, and I think it's a valid assumption here. Why take a risk or accept compromise when private school or Bethesda are reasonably within reach, albeit not without some cost?
OP here. I know I need to reply. It will take me a while. Later afternoon or tonight at the earliest. I'm not ducking you. |
NP. I'm yet another social science researcher and I've quite enjoyed the discussion thus far. Okay, carry on! |
My head hurts. |
Ed researcher here, and although I haven't crunched those particular numbers, I'd expect OP's original finding holds in general system wide. Kids from MC white families generally do just fine wherever they are placed. The exception is that there's not good evidence for cases in which there are very few such students in a school -- it's hard to do the analysis because the sample sizes are small. It's also true that kids from disadvantaged backgroundss do WORSE when they attend schools in disadvantaged neighborhoods. Economically diverse schools have a beneficial effect on kids from economically disadvantaged backgrounds. (Takeaway -- if you aren't wealthy, the best thing to do for your kids education is buy the cheapest house in the best neighborhood. Assuming test scores as a metric, of course -- this doesn't take into account the difficulties of e.g. being a minority in a majority white school.) |
People seem to be talking about the alternative to Hardy only in terms of private school. Latin and Basis (and perhaps other charters) are important variables too. I'd love to see the percentage of how many families IB for Hardy entered the lottery for their rising 5th graders. I'm going to guess it's in the 80-90% range. There is no financial cost to play the lottery and if you accept a spot that you win there is no financial cost in terms of tuition, so why not see how your child does and potentially expand your options? And inevitably a number of those families who are IB for Hardy will take the Latin or Basis option when offered, thus decreasing the 5th grade numbers at the Hardy feeder elementary (keep in mind those IB families can decide at any time that they want to go to Hardy. By enrolling at Basis, they don't relinquish their right to Hardy or the elementary feeder). And once that Hardy feeder school realizes they have lost x number of 5th graders, it may go to the waitlist to add children to 5th grade (in order to make enrollment and budget targets). And those children from the waitlist come to the school with unknown education histories. Some of those kids who join a Hardy feeder at 5th grade will be prepared and test well. Some may not. But this is for sure...they will be going to Hardy, because getting access to Hardy was likely a big reason why that family was willing to jump to a new elementary school for just one grade. So, know this...IB families at feeder elementaries will be looking at the 5th grade classes and trying to determine if those are kids they want their kids to be with in 6th grade. So it's not just about getting 5th grade families to make a pact to go to Hardy, it's about stopping the exodus after 4th grade.
And if you're IB for Hardy, you're automatically IB for Wilson, so you can leave the DCPS system for 3-4 years to attend a charter middle and then come back by right (if they don't want to do high school at the charter). That is not an option for a family like mine...we attend a Hardy feeder school OOB and if we want our children to have Wilson as an option, we have to commit to Hardy because if we leave for Latin or Basis, we take ourselves out of the feeder path. So are committed to going to Hardy because we are encouraged by what is going on there (thanks for affirming this plan, OP, with the data analysis) and because we want Wilson to be an option for us. |