In Newton, we tried an experiment in educational equity. It has failed

>Students — at all levels of performance, but especially our students who need the most support and for whom this model was intended to help most — aren’t having their needs met. In one of my multilevel classes, I received feedback that the lower-level students didn’t want to ask questions because they didn’t want to “look dumb,” and the higher-level students didn’t want to ask questions because they didn’t want their classmates to “feel dumb.” The result was a classroom that was far less dynamic than what I was typically able to cultivate.