Comment by ryandrake

Measuring (and funding) schools based on student outcome is fraught because a student's performance / preparedness for the "next level" is not entirely a function of the school. There are other significant parameters, including parental upbringing, home life stability, neighborhood safety, friends, hunger/nutrition, various trauma and abuse, the list goes on. I'm sure it's been studied, but I'd bet "school quality" is not even close to number 1 on the list of predictors of educational outcome.