As similar as it is to Cookie Clicker, I liked the way you expanded with the pop quizzes and level upgrades! I never really experienced the repair mechanic or whatever happens if something breaks cause I built for health regen early on. I really like this game and would like to see it developed further.
My only critique is that the pixel art style when expanded to full-screen is a little hard on the eyes. I would maybe lock the resolution to be a bit smaller.