To the author: great work. This is impressive -- for a high school student [0], no less -- and useful. I'm always trying to think of good projects to recommend people learning to program or trying to supplement schoolwork. There are a number of lists (of lists?) on Reddit (like [1]), but they aren't as well thought out as your three right now. I hope posting this here helps with the incentive to keep this up.

[0] https://blog.shamdasani.org/no-i-do-not-know-that-language/

[1] https://www.reddit.com/r/learnprogramming/comments/2a9ygh/10...