While colleges have raised their costs rapidly over the past two decades, only around 20% to 40% of funding for public and private schools comes from tuition and fees, according to Open Source radio.
Colleges also receive money from states, government grants and contracts, research, hospital revenue, and other sources. And colleges with big sports programs can bring in millions of dollars each year form these programs.
But all of this pales in comparison to money raised from college endowments, according to Personal Finance CheatSheet.