The single biggest difference between the two online MBA programs ranked first in the U.S. is price. Kenan-Flagler Business School's [email protected] costs more than $61,000 than Kelley Direct. You can take a bit more time to finish the Kelley program, up to five years versus three for UNC. And you're far more likely to get a waiver of a GMAT or GRE from UNC than Kelley. In the latest entering classes, only 16% at UNC submitted a GMAT or GRE score. At Kelley, 70% got into the program with a test score.