Certainly. My point is that the analysis presented here is far from complete. As I commented at https://news.ycombinator.com/item?id=28826659 https://news.ycomb

Certainly. My point is that the analysis presented here is far from complete. As I commented at https://news.ycombinator.com/item?id=28826659 https://news.ycombinator.com/item?id=28826659 , "Many people have studied this question, resulting in publications with conclusions which are all over the place" "Intrinsic motivation" means that individual teachers are being underpaid for their work, compared to market values. Tenure doesn't really exist like your sketch. Teachers for grade N+1 really don't want unprepared students from grade N. Even if it did, why should so-called "motivated" teachers do unpaid extracurricular work, and work from home in the evenings and weekends. Certainly if they used their motivation to get a part-time job they could make more money.