The Common Data Set was set up by publishers to try to standardize the information gathered from Institutions http://www.commondataset.org/
There’s no “requirement” for them to make the Common Data Set available to the public, but many colleges do.
List of CDS on College Confidential http://talk.collegeconfidential.com/college-search-selection/76444-links-to-the-common-data-sets-posted-by-colleges.html#latest