You know a class must have a fabulous reputation if not just one, but three students arrive in the classroom at 7:30am to secure good seats for a 9am class. (No, not my class, but my DD was one of the students)
This sort of thing happens often at middle son's school. It really surprised me, but they have "fun" with it. Some kids will even sit through earlier classes in the same room to get a jump!