Go over to the Collegeconfidential.com web site and search for coloratura_as
and then send her a pm....you will have to sign up to be a member if you are not....if you're not familiar with the web site it is an invaluable resource for learning about different schools....
Anyway colorature_as I believe has just finished her 2nd year at Oberlin. If you have any trouble feel free to message me...
There is also a woman who goes by the name of Lorelei2702 who has a wealth of knowledge to offer...but probably not about Oberlin (she is a voice teacher).
If you have questions about voice in general she is always happy to help out