If you're looking for a business degree, I graduated last spring, so I have a little insight as to what made it useful for me:
1) I learned stuff (basic business, finance/ops/marketing)
2) I worked with good people and learned tons from them. Big attitude adjustment for me.
3) I met alumni and recruiters - they didn't get me the job I'm in now, but I'm glad to know them, and I'd like to help them in the future
Which of these is important to you depends on your priorities. If you'd like to get better advice, of course, the best answer is a question: what are you looking to get out of b-school, and where do you want to go?