^ Berea makes tuition free for all with a ONE billion dollar endowment. If you make more than about $60K a year, don’t bother applying, you won’t get in - 99% of first year students are Pell eligible.
http://www.businessinsider.com/how-kentuckys-berea-college-got-such-a-big-endowment-2015-3
http://www.nytimes.com/2008/07/21/education/21endowments.html
Then again, Harvard uses its endowment to fund research and such, not only student buildings and services.