Your poll and your post ask two different questions. I was accepted before I had my degree as are most people. I will have my degree by the time I matriculate. If I had the option to quite school after acceptance I would have or would at least taken different classes causing me not to graduate but PCOM requires a Bachelor's degree before matriculation.
some schools require you to have a bachelors degree before matriculating into their school and a few have a 90+ hour agreement. So i guess if you got into one of the schools that only have a 90+ hour agreement, you're not obligated to get your degree if you don't want to. But most people usually do get their degree by the time they matriculate...