I attend Penn Foster University myself, I dropped out of high school and with Penn Foster I have the opportunity to achieve my goal and also work while I do it. You receive your work books in the mail, or you can read them online. You take an exam at the end of each unit you complete and there is between 2-6 units in one subject. You have the choice of taking your exams online, over the phone, or by mail. I submit my online because you receive your answers the minute you're done. I would definately recommend Penn Foster to other people, whether it be to get their high school diploma or take college classes.