[carbocation]

Ooh, I've got a couple. I'll just use one for an example though:

http://college.mychances.net/tools/college-choice-matrix.php

This tool is based on ~25,000 college applications and shows you the relative preference for each college. It's not based on direct matchups but instead based on an Elo point system, so that all colleges can be ranked along one dimension (essentially, revealed student preference).

It's rarely used because it's really hard to find on the site. It's also tough to figure out how to choose the schools that show up, instead of just looking at the defaults. It's also possible that college applicants care way less about this sort of thing than I, a processor and curator of their data, do.

[bmr]

Assuming you've looked into it, how impossible is it to license all of a school's admission data (i.e. every applicant's GPA, SAT, and admission status) in some anonymous format?

I would have loved a tool that that would let me enter a GPA and SAT score and then using actual data could tell me that 500 students with comparable stats (like +/- 0.1 for GPA and +/- 50 for SAT) applied to school X last year and 380 were admitted.

[carbocation]

It's true that it would make my life a lot easier since I wouldn't have to collect this information myself from individuals. I just rely on self-reporting and statistical techniques to achieve approximate results. Now that you mention it, it would be interesting to get the full data from one school and see how close to the truth we actually get.