Harvard, Princeton tie for rankings honors.(Main)

For the third straight year, Harvard and Princeton share the top spot for national universities in the U.S. News & World Report rankings of America's best colleges.

In fact, the full rankings look much like last year, with not one school in the top 20 moving more than two spots in either direction. Rounding out the top five in the national university category are Yale, the University of Pennsylvania, and Duke and …