I'm gonna be genuine here, and I don't mean to be rude, but I mean this as genuine criticism to help try and improve the game.
As a game, AC is amazing. It has a level of detail, interactivity, and care put into it very few VNs can match, heck the characters blink for fricks sake!
But where it falls flat in my opinion, is the depth of the characters. I get that there's a bunch of them, and you can only learn so much right off the bat, but the character development is so painfully slow I got bored halfway through my first playthrough and never came back. Pretty much all of the characters feel almost the same - Attractive hunk dude who is sweet when you get to know him but has [Insert negative trait here] at first glance. Don't get me wrong, I like me some hunks, but the relationships with the characters just feel rather... empty. Games like Adastra, Repeat, and FBTW have indepth, complex and diverse characters full of contradictions, with no one good or bad character (Okay maybe Cato, fuck that guy), but After Class really lacks that.
TL;DR: Game is great, writing is not.