That's why you should go one story at a time unless it is necessary to do it. For example, you need to make some process with eric quest line in order to complate aqua quest.
Are you playing version 0.16.1?
Yes, I'm surprised no one else has run in to this bug. I guess it requires very specific circumstances.
-Roxxy storyline at point where she asks for homework
-Bisette storyline at point where she made you read poem
Boom, permanently stuck and all school quests are blocked off forever. I don't get why I can't even leave the main hallway though-- even when events trigger at home I can at least move around the house freely until I encounter that specific event. Seems like DC wanted to force the storyline to be more linear and idiotproof, but in doing so created a new paradox. It's very unlike DC to force things to be that linear-- for the magazines it has you search the whole school on your own, it doesn't say "I have to go to the teacher's lounge, maybe there's some there!" and disallow you from going anywhere else in school.
The sad part is this save was actually my main save, and I was hoping to unlock all possible characters (Mia and Mrs. Johnson route) in one save file to save space.