I think I'd want to know what they qualify as "detention" as I've yet to see it used in the way it was used when I was growing up. Growing up, if you got a detention, a note went home to your parents to sign and you stayed after school. None of that in the schools we've been involved with. Elementary school would retain kids during recess for 5 minutes and call it "detention." Middle school held their detentions at lunch. The kids would just eat in a teacher's room with supervision. The high school had Saturday school and excessive tardies would go there (and the school could use it as an attendance recovery day to make up the lost revenue of absent/tardy kids.) I believe this is largely due to the high quantity of working families, aftercare consideration and bussing issues. I'd actually be surprised if this school used a traditional detention format. Worth asking about before getting too upset about it.