And these aren't new ideas -- there were experiments in Winnetka, Illinois, 100 years ago, where they did mastery-based learning and saw great results, but they said it wouldn't scale because it was logistically difficult.
Non sono obiezioni nuove -- hanno fatto sperimentazioni a Winnetka, Illinois, 100 anni fa, hanno usato questo approccio e hanno visto grandi risultati, ma non pensavano prendesse piede, perché la logistica era complicata.