My wife was teaching in a public school in NYC. They apply a teaching philosophy called "inclusive classrooms." The idea is that the highest performing kids a

My wife was teaching in a public school in NYC. They apply a teaching philosophy called "inclusive classrooms." The idea is that the highest performing kids and the lowest performing kids should all be in the same class so the advanced ones can "help" the slower ones. The result is the kids with promise don't get taught and can't reach their full potential. You said it's "tricky to run experiments in education." I would modify that to say that it's tricky to run proper experiments. What they are doing is running experiments without using controls or metrics. How can they get away with this? I believe it is because of the unpopularity of the idea that differences exist and should be taught to differently.