1. Recently I was reading how in the early public school system, students of a widely different age all sat in the same class.<p>The bigger kids will learn first from the teacher, and in turn, turn around and teach the younger ones.<p>At least according to this article, it works. Maybe high school can also benefit from this.<p>2. I find it intriguing that a professor say this:<p>&gt; Third, it’s fun for them. They can laugh and joke with each other, rather than sit in silence as I repeat information that’s right in front of them anyway.<p>Usually the teacher is doing his best to get the class as quiet as possible.