Too much listening - not enough action and interaction. Your day is controlled - you can't take a break when you need to. Negative teachers - sometimes the subject is interesting, but the teacher is boring or has a negative attitude. Distracting - it's hard to concentrate in noise and confusion.
Day is too long - it's impossible to concentrate for seven periods.
Too many rules - very little independence or freedom. Too much homework - you can't work all day and at night too. Have to sit still - even when you feel restless. Too many things to keep track of - notes, assignments, and projects for six or seven classes. Try to get to bed earlier at night.