Really nice job!
The different levels felt very different which was nice. It was super satisfying to line up a bunch to hit in one dash. The music and sfx felt right, and the poetry was nice.
Do you get any returning students to help out each year, or has each year been only 1 grade level?
Also I would love to know how you have them work on this at once. Are you using a source control, or is it just one computer that all the work gets moved to?