You know, there's something to be said for NOT attending a formal midwifery school, too.
I think AAMI and an apprenticeship is a PERFECT midwifery education. I don't know why there is a belief that you have to go to a "school" to be a good midwife or get a good, solid education.
In some states where midwifery is highly regulated, the schools may have more of a slant towards conservative midwifery or even leans towards more allopathic measures. This is not the case with all schools, but it is becoming more and more common.
Up until about ten years ago, all midwives learned either through self-study, study groups or from courses like AAMI. I rec'd my education through a formal school and I felt like it was good for me because I had no one in my area to study with and my preceptor didn't want to do my education beyond the apprenticeship. I also felt like school was the one thing that expedited my healing process over my daughter's birth.
BUT, would I pay twice as much for that same education today? Probably not. As a midwife, it's hard to start your practice with high loan bills. I was fortunate that I had to pay as I went through school. I'm sure that if I had lots of bills sitting at the start of my practice, I would have been more desperate for clients = open to problems.
I think it depends upon what your philosophy of birth is. If you know midwives that you like and find that your belief system fits with theirs, ask them about their education. Interview as many as you can (like your'e doing here!) and then REALLY check out the schools. Hear the good, the bad and the ugly.