Kids who survive their first year at Columbia or Yale universities almost always come back as sophomores.
The two Ivy League schools top a U.S. News and World Report list of colleges' freshman retention rates, with 99 percent of first-year students returning.
Nationwide, the average retention rate was 75.5 percent among the 1,344 ranked institutions that submitted data to U.S. News in its annual survey.
The top 10:
1. Columbia and Yale, 99 percent
3. University of Chicago, 98.75
4. Princeton and Stanford, 98.25
6. Harvey Mudd, 98
7. Amherst, Dartmouth, Notre Dame and University of Pennsylvania, 97.75
The bottom of the list was occupied by South University in Georgia, with a retention rate of 30 percent.