60 Minutes ran an interesting story last night on a charter school in NYC that operates out of trailers so as to redirect funds toward teacher pay: $125K per middle school teacher. In exchange, the teachers have no union, no tenure, and no contract. They are retained at will and can be dismissed at any time. They have high accountability, are expected to engage every student, and to demonstrate and track student learning. After the students go home, they watch video of one another teaching, offering constructive feedback, and seeking to help each other improve.