CBD wrote:
For the sake of clarification:
The research Dr. Finn did in Buffalo gave some teachers smaller class sizes at the expense of the class sizes of other teachers. Also, the Buffalo School District is the last district to ever consider hiring more teachers, or having smaller class sizes, therefore there's no way in hell he was paid off.
Sure. And as was touched upon both in my post and in the link I provided. Which teachers were chosen to be in the smaller classrooms? The "good" teachers? Or the "crappy" teachers?
Think about it, and you'll understand why tests of class programs like that can easily have skewed results. If they picked their 5 best teachers to have smaller classes, then those classes will show an increase in student learning, doubly so if then compared to the other classes which are not only larger in relation, but have a higher percentage of mediocre to crappy teachers in them.
It's all about statistics.
The only correct way to assess class size would be to arbitrarily remove say 30% of the students (randomly) from a school and send them somewhere else. Then take the exact same teachers in the exact same school in the exact same classrooms with the exact same curriculum and see how they compare over time. Assuming the student trimming was truly random (and didn't include a disproportionately higher percentage of troublemakers and/or just plain poor student), then you'd have an accurate test. You'd also have to figure out a way to measure results, since you will no longer have a direct control to compare to (you've changed the school itself, so you can't use it, and other classes at other schools may not be accurate).
My point is that from a scientific point of view, the tests used to determine that class size was such a huge deal are horribly inaccurate. They would never stand up to any sort of real review, but we use them to make broad policy changes nationwide.
What is "real" is the fact that other nations, with larger class sizes still out perform our students at every turn. What is "real" is that private schools, often with much larger classroom sizes outperform public schools at every turn. While I tend to agree that if everything else is equal, a smaller class size will help, it's not the magic bullet everyone seems to think it is.
The biggest factors really are having teachers who want to teach, and students who want to learn. The greater your percentage of both of those in a classroom setting, the more successful the classroom will be. Just making smaller classes, if nothing else is done, wont have any significant postive effect. In fact, due to the way this is done, it's having a negative effect since it means we either have to build more schools, or cut the curriculum in order to allow for fewer students per class session.