I did my M2 Exit with a non-Dot helmet... LOL...but it did have a DOT sticker on it...<<< BUT >>>they didnt check...
I also did my M2 Course back in 2000, (with a legit helmet), but I they didnt check for DOT back then either. (I remember cuz the guy I sat next to on the Friday night session was shitting himself cuz he only had a shorty helmet.) He used the shorty for the next 2 days..
It depends on the instructor I guess...
Which course are you taking? M2Exit?.. What bike are you gonna ride?
Good luck on the course!!...Its easy just dont drop a bike... That is an instant failure...
PS.. Welcome to the board...