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[quote=Anonymous][quote=Anonymous][quote=Anonymous]Cap class sizes at 20 kids.[/quote]

Imagine that you have forty teachers teaching 30 kids each.

Further imagine that teacher quality varies -- there are good teachers, and bad teachers -- and further, imagine the school is good at picking teachers, so that the worst teachers in the group are still mostly better than those from the pool of people that flunked the interview.

In order to decrease class sizes to 20, you will need to hire another twenty teachers. Nearly all of these teachers will be worse than those in the existing pool.

Now, after the change, the forty original teachers are teaching twenty students each, educating eight hundred students. These students may derive some benefits from the smaller class sizes. They probably do a bit better.

The twenty new teachers are teaching twenty students each. But these teachers are worse at teaching. The students here may derive some benefits from smaller class sizes, but are also being taught by noticeably worse teachers. They probably do significantly worse.

Anyway, from the above model, it's pretty easy to see why the various experiments with reducing class sizes -- which are numerous! -- have nearly always failed to produce tangible benefits, and have failed in an extremely expensive fashion.
[/quote]

Such a random, flawed analysis.

Actually, scientific research shows otherwise. 
https://www.harvardmagazine.com/2019/08/case-for-smaller-classes
https://gspp.berkeley.edu/research/featured/the-class-size-debate-what-the-evidence-means-for-education-policy

Plus, any teacher or parent will anecdotally tell you that smaller class sizes are better overall.

This is why it is important for teachers to have a voice in education policy - who thought big classes were a good idea? Not teachers or anyone with practical experience. Just someone trying to address budget deficit in our schools.

[/quote]

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