A question in regards to school discipline

The gist of it was "You were late, so now you have to spend an extra hour in school and miss out on hanging with friends." The dean told us to either read a book or do our homework. If I wasn't doing homework, I was sleeping the hour away, then went home. I really learned nothing since I kept being late every morning-every year. (And I don't think homework was a punishment, if that's what you meant.)

The punishment was pointless though. I didn't care about an extra hour in school.

Were your detentions after school, or at lunch time?