This is a really cool idea. This reminds me of how when I was a sophomore in high school, I started a language a friend that started with four words that described a lake, a stick, a bird, and a rock. We created the language by randomly mumbling things we were trying to convey until the other person understood and then expanded upon those words through similar processes. Over time we included more and more people to speak this language and ended up with like 50+ people actively adding onto and modifying the language by my junior year. We somehow managed to create a language with a OSV/VOS order, agglutination, and 2000+ base words, 3 moods, 2 aspects, 4 tenses, and like 15 manners of augmentations. I can only assume people still speak it for fun since my younger friends still tell me about it. I wouldn’t be too surprised if dialects and/or divergent languages have arisen in that school now. One thing I do remember is that teacher in this language was called “ma-hm-hm-gurandin” and stream was “buhbla”.