Friend, if laggyness is the case there's a suggestion for you that will make everyone's life easier
Obviously, your game doesn't even pretend to be photorealistic, it is full of static non-interactable NPCs and it's massive physically. Sooo maybe it's better to make everything much simpler? All the fun part of the game is in the dialogues, why waste time increasing the amount of polygons of static models that can only idle and go somewhere? And those rooms with 20+ NPCs where only one is interactable. Make two-three variations for little students groups models, create really simple idle animations for them, like REALLY simple, 10-20 frames, and put them somewhere you want to create an illusion of a crowd. This will help gamers to easily find a character we are able to speak with. Make all the interiors and exteriors flat, bumps, columns and other stuff only make it even harder to navigate through!
All that i'm trying to say is that this game has it's charm, but you have to struggle through all the unnecessary stuff from one interesting character, place or quest to another
If the need in 3D artist is still actual, call me. Never created something game-ready, but heres what I do usually:
Artstation
Wish you luck friend
Viewing post in Wizard School Exchange Student comments
Thanks and thanks for the recommendations. Definitely some performance things coming in the next update, but it's unrelated to the models. Since I am definitely not a 3dmodeller, it's always been in the more long-term plans to find someone to fix the models or create entirely new ones. Maybe I will reach out!