> where students and teachers can interact with each other. There's another dimension to interactivity that is not merely social. Really excellent teachers in

> where students and teachers can interact with each other. There's another dimension to interactivity that is not merely social. Really excellent teachers in a "small enough" class-size are able to assess individual students IN THE CLASSROOM. Interactivity in this context means the teachers pose questions to students individually or as a group and orchestrate coherent learning-focused discussions. This is the basis of the Harkness Method which is used in the most elite private schools where class-size is in the singe digits.