School's back in session, which, for some is a reason to brag.

US News & World Report has come out with a list of the best colleges in America. Princeton University proved to be the smartiest of all the smarty pants out there, finishing atop the list.

Harvard, which tied for first last year with Princeton, tumbled one slot to second. Overall, the Ivy League had a tremendous showing, placing six schools in the top 10

The rankings of some 1,800 institutions of higher learning were created by looking at more 16 factors, including acceptance rates, tuition and class size, among others

Top 10 Colleges

1. Princeton University
2.
Harvard University
3.
Yale University
4.
Columbia University
5.
(tie) Stanford University
5.
(tie) University of Chicago
7.
(tie) Duke University
7.
(tie) Massachusetts Institute of Technology
7.
(tie) University of Pennsylvania
10.
(tie)  California Institute of Technology
10.
(tie) Dartmouth College

[US News & World Report]