Share 'childbirth classes'

I want to stay away from the hospital birthing classes. I looked into a Bradley class, but the instructor is not currently doing them right now since she has 3 kids and no other couples interested at the moment. My question is...Do you have to go through a birthing class? My doula said she was going to help us come up with something, but I'd just like to know if they are necessary to do, given th…