A brick and mortar library stuffed with books is not the best thing we can do for the youth of our country. Schools and day-care centers could have these books stored instead.
I found this incredibly inspiring site, elabafrica. Inspired by this could we not have something similar. The reason is that education is not just about reading. Its making. We need the young to have the maker skills and the knowledge that comes with it. Even if the raspberry pi computer is cheap. The robots and boards that come with it are not. So here we need to democratize access to maker knowledge.
Another idea would be to increase the readability of books. The most simple solution would be to have a large screen e-reader with an eink display. Should be perfect for tired eyes looking at small fonts all day.