Those are 7 American universities. Am sure hundreds of other non-American universities also didn't participate.
Either way, those 7 would make minor difference to the list.
Maybe.
Those were just 7 examples.
I will go out on a limb and say that those seven would be at or near the top of the rankings and would set the rating curve.
I personally think it would make a big difference in this list.
Many schools did not participate:
- Harvard
- Wharton
- Yale
- Columbia
- Chicago
- Berkeley
- Stanford
These ratings have limited utility if you leave out the top schools.