I was thinking the exact same thing reading the article. It would have to be an actual class, preferably taught by the same person (to control for personal char

I was thinking the exact same thing reading the article. It would have to be an actual class, preferably taught by the same person (to control for personal charisma etc) that does not directly translate into behavioral modification but does teach something useful (to avoid dropout/motivation differentials) Music? Sports? I'm not sure.