When i was in school, we had 7 classes total. 6 per day. School started at 7:30 and ended at 2:30. Classes where about 50 mins long with 5 min walk time, and 1 hour off campus lunch.

Snice there where 7 classes we only went to 6 of them a day. Like Mon was a "no 1" meaning you go to your 2period class 3 4 5 6 7 then tues was a "no 2" you go to First period 3 4 5 6 7, ect...