At Cal, a couple of students built an all-in-one course search/scheduling tool which incorporated grade distros, professor ratings, exam DBs, etc. They eventual

At Cal, a couple of students built an all-in-one course search/scheduling tool which incorporated grade distros, professor ratings, exam DBs, etc. They eventually sold it to our independent student union for continued development and maintenance. It sounds like your solution targets professors but it could be something to keep in mind.