As a Calvin fan and a mom of a very Calvin-esque kid who takes Ritalin, this did make me want to cry the first time I saw it. It's true, one must trade a little bit of Calvin for academic success. Luckily, it's only for 6 hours per day, 180 days out of the year. The rest of the 7656 hours (totalling 319 days) of the year, it's All Calvin All The Time.
Happy, creative kids who fail school and get frustrated don't stay happy and creative for long.