I thought this was going to be about the no-child-left-behind mindset, which results in teachers spending most of their time focusing on the slowest learners and very little time on students who are already at/above grade level. That mindset is certainly common in our school, and learning for the latter students is closer to flatlined than maximized.

Maximizing learning via SR is interesting, but it seems like it's the furthest thing from our kids' teachers' minds.