Colleges with the best classical vocal programs?

I have an 11th grade daughter who is a classically trained vocalist. She has recently become interested in opera but also wants the flexibility to do more current forms of voice and music. She is looking at highly selective colleges where she like to double major in voice (and some humanities TBD). I have not found a great way to find the best schools for this (other than just searching each individual school but they all claim to have great music departments). Any advice on how to look for these programs?

There are many classical vocalists / parents in CC who can give you good ideas. Perhaps, you can ask a question in this thread (mostly for current 12th grade but many experienced members are in this thread).

http://talk.qa.collegeconfidential.com/music-major/2135909-class-of-2024-undergrad-class-of-2022-grad-the-tours-the-auditions-the-journey.html#latest