Did you guess???

So here's the difference between every Ivy league school and BYU.

Ben has received letters of inquiry from every Ivy league school inviting him to consider attending there.

BYU??  I guess they just aren't interested. 

One of These Things is Not Like the Other

It's official.   Today I can ask the question and Friday I'll give you the answer.  I will have a prize for the first person to correctly identify what my answer will be Friday.  I won't change the answer.  I promise.
 
What is the difference between:

Princeton, Dartmouth, Brown, Cornell, Columbia, Penn, Yale, Harvard

AND


BYU?