two of my close friends dropped out of college during their last semester of school 3 years ago. Neither of them have gone back.
one couldn't get housing his last semester, so he though he would take a semester off, unfortunately I asked him now and he said he has forgotten everything and can't finish his 3 upper level classes for his bio major. He works for his mom now at a laundromat she owns.
The other got a really good offer from the place he was interning at and took it because he didn't know when the job was going to have another opening. He needed 13 credits, he says he'll go back one day because the classes he had to take don't have any special requirements.