Pay your kids for making good grades?
I would. I plan to.
I was always told, "School is your job." So, why not get a paycheck for it? I had friend's whose parents did this and they succeeded in school. I was told, "Do it or else." and I skipped class, slept through class, and just flunked. I was plenty smart enough to do the work just lazy and I know with proper motivation (something tangible) I would have done well.