Facing Up to Our Ignorance

Diane Ravitch shares a timely lesson: We don't (yet) know how to save schools.By Sara Mosle (Slate Mag.)~"Yet suddenly this one theory is driving reform. This is why Obama wants states to gather more data. He wants to tie individual students' scores to individual teachers, so achievement can be monitored not only school by school but also classroom by classroom, and then teachers can be fired or