I was in elementary school from the late 80s to the early 90s. During that time trapper keepers were really popular yet for some unexplained reason... they were banned. You were not allowed to have them. you could own any other brand of binder, yet if you had a trapper keeper it was sent home with you at the end of the day and told not to bring it in again. I don't think I was the only one who experienced this and its is still a mystery to me. Could folks explain this to me? Whats the deal?