Limited career options from 2nd tier or 3rd tier B-school?

What's your professional expereince to date. I went to top school, no regrets, but it was most useful in my first few jobs, after that experiences was more important. Do you think you have the professional expereince to get past a third rate school the first few jobs out of school. Otherwise, its is worth trying to stretch IMHO. Really good contacts are worth their weight in gold.