I have come up with a way to convince Bloomberg and all these other politicians, businessmen and other know it alls that class size matters.
They should sign up for a class in a field they have no aptitude in and no previous knowledge. It should be a class required to not only pass, but to excel in. And, I would make sure the class had 40 students in it, each student needy of individual help and some with attention problems. I would assign a teacher with a reputation of being a master and with VAM to back this up.
Maybe then, would these individuals who know nothing about education realize just how important small classes are to student achievement.