Take a look at a recent project of mine, which begins to implement this idea. The approach uses Wikipedia to help find 'related' and 'prerequisite' concepts for generating a curriculum.

I wrote a quick article about it, here: https://news.ycombinator.com/item?id=7511837 https://medium.com/p/b45429ef49e4

...And the supporting code: https://github.com/pjama/wikigraph