Since a student doesn’t get paid to study, ultimately the only responsibility s/he has is for him or herself. Your parents can try to motivate you by means of encouragement or threats, but whether you pass or fail, the glory or shame is yours alone. It would also take a lot to get you kicked out of school. At work, because you are paid, you have to take some amount of responsibility, failing which you will earn some talking-to from your boss (depending on how nice s/he is) and the guilt that you are not worth the amount being paid. You might also cause further work for your colleagues to pick up after your mess. Talk about a guilt trip.