Some context:

This is the github repo for this site: https://collegescorecard.ed.gov

If you want just the data, here's the landing page with documentation: https://collegescorecard.ed.gov/data/

Direct link to the zip: https://s3.amazonaws.com/ed-college-choice-public/CollegeSco...

The NYT recently wrote an analysis of the salaries data, finding that "at some expensive colleges, the salaries of students 10 years after enrollment are bleak, and there is an earnings gender gap at every top university":

http://www.nytimes.com/2015/09/14/upshot/gaps-in-alumni-earn...

18F is the GSA team that is building a lot of the federal websites and APIs and open sourcing them.