Originally Posted by softlysinging
Childbirth classes aren't (or shouldn't be) just about "learning". There should be exercises and games aimed at getting you to think through various scenarios, narrow down your priorities, practice different coping mechanisms, talk with other people. It's also a great way to get husbands involved and meet other expectant parents who desire a natural birth.
This. In fact, research shows that attenders of childbirth class do as well as non-attenders and have similar outcomes in birth -- but what's good about childbirth class is that you meet people and form connections. Having friends going through what you're going through can decrease your risk of PPD. And, if it's a partner-friendly class and the teacher really goes out of her way to engage your partner, then it's a double-win.
That said, if you and your partner already have a strong support network, and your partner already knows what's up in terms of birth and birth support (s/he's read books and talked with you at length), then I'd save the money and invest it in a nice postpartum massage! ;-)