I've googled on various terms ('collusion', 'price fixing', ...) but could only find some vagues references to the Justice Department 'conducting an investigation', and this was from 1989. No mention of any results or of any recent investigations. If you have other sources, please let us know. I know of no such cases.
"But what about the antitrust laws?" I was asked at the TIAA-CREF conference when I suggested this level of cooperation. Administrators cringe at the memory of the Justice Department's lawsuit challenging the agreement among the Ivy League colleges and MIT not to compete in calculating financial aid—or at least they use that litigation as a convenient excuse not to do anything. What they forget is that, alone among these schools, MIT stood up to the government, and in 1991 it won the case. The aftermath is telling: The Ivies didn't restore what was known as the "overlap" agreement, and the financial aid wars were revived.
Be careful in trusting the above, since the suit started in 1991, alhtough the Feds had been negotiating with the schools in question for some time before then (and I have a vague memory that some other schools may have been involved but punted before the lawsuit was brought).
MIT, Justice Dept. Set Up New Way for Non-Profit
Colleges To Cooperate on Need-Based Financial Aid
The U.S. Justice Department today agreed to dismiss the financial aid antitrust case against the Massachusetts Institute of Technology and establish a new way for non-profit colleges to cooperate on need-based financial aid to undergraduates, MIT announced.
MIT President Charles M. Vest told a news conference at MIT, "I am very pleased to annmounce that the U.S. Department of Justice has informed MIT it will drop the antitrust case it brought against the Institute nearly thre years ago."
He said the resolution of the case is in two parts:
- "First, the Justice Department will dismiss all of its claims against MIT.
- "Second, the settlement establishes guidelines under which colleges and universities can coordinate their financial aid practices in order to insure that their limited financial aid funds are awarded to qualified students solely on the basis of need."
It goes into a lot of details on the history of the case, e.g. the 8 other schools folded and signed a consent degree in 1991 while MIT fought and after a big win WRT to interpretation of antitrust law in the appeals court they and the Justice department quickly settled.