Nice to hear from an actual teacher about education. Billionaires have the same issue as a lot of other people - they went to school once, had some beef with it, are now successful, and so they think they've got some insight. Its funny how we in the tech industry (rightly) bristle at some outsider like McKinsey claiming insight into our world but can't see the same hubris when we talk about education without any background or training in it. Well except - we went to school once.