"Are Ivy League Schools Fudging Their Numbers?"

Journalist Lynn O'Shaughnessy seems to have caught a few bastions of higher education stretching the truth:

Here’s one of the egregious examples: Stanford reported to the U.S. Department of Education that 54% of its professors are full time. But Stanford told U.S. News & World Report that 99% of its faculty are full time. Huh?

The University of Pennsylvania informed the federal government that 52% of its faculty are full timers, but it told US News that 86% were. Princeton and Harvard’s magazine stats were 92% and 93% respectively, but its federal numbers were 79% and 83%.

Duke was the only university in US News’ top 10 university list that reported consistent figures to both entities. The school says that 97% of its faculty are full time.

(Maybe it's an issue of different definitions? I don't know.)