Solid advice. If it doesn't work out and you quit your job to pursue the startup you might have a smaller bank account but you will have another solid item for your resume and it shouldn't be too hard to find a new job. If on the other hand it doesn't work out and you dropped out of college, you are in a much worse spot. Failed startup wont do much for getting back into school and now you still have to fund the schooling. You could get a job but it wont pay much without a college degree.