What is the best college/university for writing?

I'm looking to further pursue writing past the high school setting and was wondering what, in your opinion, is the best arts college that offers a masters in writing (specifically creative writing)? I've already looked into a few myself. I would love to go to either Marist in New York or Columbia College Chicago, but they both have their flaws. I've heard that Marist doesn't have a lot of diversity among the student body, which I find hinders my creativity as a writer, and Columbia doesn't offer a masters in creative writing. So I'm at a loss. Help is greatly appreciated.