Can I restart my classes at John Robert Powers?

4 years ago, I started acting classes at John Robert Powers. I had to discontinue the classes because my mom was really sick with cancer. I really want to start back up, but I do not know if I have to pay for it again. It was a little more than 1,000 dollars, and I really do not want to waste my money for some classes I've already taken. I started the classes near the end of their whole "semester" and I was just wondering if I can start back up without paying for anything?