Hey there!
Nice job on picking up on 2 minor NPC errors, I personally missed the trashcan being out of place, and for some reason missed the painting too when I was checking through the levels. (A little embarrassing I on my part
)
As for the wall borders above the doors, I personally prefer the way you have shown in your image, but that's not to say it *should* be that way. It's more of a preference than a major tile error.
With nothing really indicating the levels that connect within the school, I really love the idea of light coming through, which will be something we look in to. (Great suggestion)
Due to the iMask's NPC being on top of the gym chair, it had to be drawoverplayer; If it was not, the chair would be on top (even if they both drew under). However, this is only really the smallest of issues considering the weights below block the player from being able to get "underneath" at most parts.
Off on a tangent, overall the back to school shop was a great success, many players have complimented the work and I'm glad to see so many people taking a liking to it. I'm also thrilled to hear that the only level I did for this project was one you had positive feedback for