That's basically what I am doing with Quill.org (I'm the founder / executive director). Quill is a platform for learning tools and games - we support six web ap

That's basically what I am doing with Quill.org (I'm the founder / executive director). Quill is a platform for learning tools and games - we support six web applications that plug into a common, open source platform where teachers can assign activities to students and monitor results. At the moment, our applications are all focused on literacy, and they are more "tool-like" than "game-like". However, we use AI to assess writing, and the AI creates a game-like experience of writing different responses and getting different pieces of feedback (somewhat like a MUD RPG). We're creating the applications in-house now, and the API is not public, but the hope is to open it up in the future to allow others to launch tools and game on our platform. Quill is now serving more than six million students across the United States, about 12% of all K-12 students.