Rigid isn't necessarily bad. What matters is praxis and curriculum. I used to teach... Praxis should always be about getting kids to actually do real things ; curriculum is what topics the teacher or school decides will definitely be in the class. I made all my own curricula, developed my own praxis. But that was overseas... when I came back to the US, I hit a Wall of Stupid - basically "u got loicense for that?" And to get that license, you conform to bad praxis and teach curriculum handed to you by the state. That's the real problem.