Fun game. Looks like one of those old school browser games on miniclip or something. THe idea is interesting but it doesn't fit the theme the that much(even though there are some elements of the theme). Jumping kind of feels like you are flying. Also I found a bug where you can spam F during dialogue causing it to glitch. This can cause you to get a lot of A tests from that one teacher(Mr. D i think he was called) and effectively have infinite health. The game would have also been a lot better with sounds and music.
That being said the game is good(especially for your first game jam), and the map size was impressive.Also and I understand your time constraint was the main reason for all its flaws. Hope this feedback encourages you to update and improve your game. Congrats on your first jam and I hope to see more from you in the future.
Also I would appreciate if you played and rated my game as well. https://itch.io/jam/cgj/rate/477164