Doulas hold themselves to a high professional standard driven by their dedication to mothers and the bond of trust they form with their clients. There are no state or federal regulations for doulas because they provide non-medical services.
You do not need college or associate's degrees to become a doula. You do however need the natural-born desire to help and care for others.
Any compassionate woman with an interest in helping others can become a doula
You can find out how doulas are different from a midwife or ObGyn here.