both orib and steveplace have good suggestions that I'd like to expand on.
For study notes, I think an Amazon affiliate model would probably work best. Ebay would be tempting (i.e. potentially cheaper) but likely to throw up less relevant results.
As for packaging up and selling to schools - great, but even greater would be to provide schools with their own hosted version instead. They set up a CNAME off their domain pointed at a hosted version and students can work within their own schools. This would also work for colleges.
Comments
both orib and steveplace have good suggestions that I'd like to expand on.
For study notes, I think an Amazon affiliate model would probably work best. Ebay would be tempting (i.e. potentially cheaper) but likely to throw up less relevant results.
As for packaging up and selling to schools - great, but even greater would be to provide schools with their own hosted version instead. They set up a CNAME off their domain pointed at a hosted version and students can work within their own schools. This would also work for colleges.