About Dental

I’d like to go to school to become a dental assistant but noticed there are courses for ‘Dental Assistant I’ and ‘Dental Assistant II’. Which is the better one to take?

I know that it just depends on what state you live in. I would just like some answers from different people so I can get an idea. I am planning on going to school for dental assisting this fall. Also, is it better to have an associates degree or is the pay the same either way?