Cute simple yet charming game. Very silly dialogue :) and a "stealth" game seems like a nice take on the theme. I actually didn't mind the controls like some other poster said, but I will agree that I don't think the student chair set up needed precise collisions! Just make it a box. I found the sound mixing to be a bit lacking. The ost is pretty catchy on its own, but the pings and beebs on the sfx channel are too high and blown out relative to the music in my opinion and there's no way to fix it/ rebalance in game. Also, another small problem, it is not possible to walk above the seat in the top-right corner of the seating arrangement since it's blocked by one of the teacher's desk even though it looks like you should be able to squeeze right in lol. I think the UI elements clash a bit with the rest of the game because they're in a different resolution, like the clock on the UI is so much more detail/ pixel density than the rest of the objects in the scene, I'm not sure if that's a scaling problem or you just scaling down really big sprites. In any case, nice job! It's kind of like Monoco: what's Yours is Mine, but small and cute.