Thanks for the feedback! No it's not, and I do want to know when does the error occur. If it isn't too hard, can you tell us when that bug is occuring?
When I take the woodwork and homeroom classes in the school, it just shows an empty page, the time required to take it passes, and when I click with the mouse it just gets me to recess after class. Also, when there is the dialog option with Kate to talk to during recess, whether I talked with her just before or not at all, when next I try to take a class her dialog is repeated.