>how do you know if students were successful or not Well, we'd first have to work out why they're there in the first place. Are we trying to maximize their inc

>how do you know if students were successful or not Well, we'd first have to work out why they're there in the first place. Are we trying to maximize their income when they get jobs (in which case there are better metrics, but they'll take longer before you can use them)?. Are we trying to make them 'well rounded citizens' (define it, and then maybe you can test it)? Is it just tax-payer babysitting (school violence would be the only relevant metric than perhaps)? You could just evaluate the teacher themselves, and as long as they seem to be competent and honest, you could just rely on their evaluations. A kind of 'web of trust' model for testing.