Do I still have to go to school for my DUI if it wasn’t court ordered and I already did 53 days to terminate probation?

I got the DUI and went to court and was convicted. I did 53 days to terminate probation and pay fines. I went to the DMV and they told me that my license is suspended until next May 9th. I need an SR 22 and $100 dollar regarding issuing fee on that day, but they didn't say that I had to do the class. I didn't say anything, but does this mean I don't have to complete the school since it wasn't court appointed to get my license back? I also was under 21 when I got the DUI.