Sippy Cup writes the following...
I saw that someone mentioned the undergraduate creative writing program at Beloit College, and I just wanted to second that. I am a graduating senior at Beloit, and I came out here to Wisconsin all the way from Massachusetts for the writing program. You sound like me- I won four national writing awards in high school, and I have known all along that I wanted to attend an MFA. I am actually applying for MFA programs right now!
Creative writing is the largest major at Beloit, and the faculty is amazing. Since I have been a student, both Billy Collins and Bei Dao have taught writing workshops as visiting writers. There have been a number of well-known writers who have visited campus to do readings, and some students are chosen by professors to meet them, go out to dinner with them, etc.
The workshop setting at Beloit is wonderful. Almost all of the students in the program are very talented. Their work is polished, they give great feedback, and they are very serious about what they are doing.
I also have to point out that although it is a private liberal arts college, the financial aid is phenominal. I come from a fairly poor family, and I was able to attend Beloit without many student loans at all.
Good luck! I definitely dont see anything wrong with seeking a college with a good writing program, if you are sure that is what you want to do. It worked wonderfully for me.