I worked in ABA for 10 years (became certified BCaBA about two years ago). I lived/worked in CA, and there was no special requirements (aside from bachelor's degree) to become an ABA therapist. It's amazing work, and even though it's a different field than SLP, I think it's absolutely relevant. I want to continue working with children, especially those with DD's. I know about different AAC's, I know about behaviorally based intervention methods to address language/communication skills, I know about common characteristics associated with autism...... this list can go on. I highly recommend going into this for some great experience if you are interested and have the opportunity. Not only will you be helping out so many kiddos, but you'll learn TONS