Grade Boundaries @ Vandy?

I know this probably varies with classes but (roughly speaking) what percentage in a class is an A and what is equal to an A-?

For example, is 90%or higher an A and is 85% or higher an A- in most classes? My friend is deciding between Vanderbilt and a few other schools. He’s interested in learning more about their grading systems before he commits.

It’s usually something like: 90 - 92 = A-, 92 - 100 = A. But some classes are heavily curved so this can change.