What are good grad school programs for someone with a BFA who wants a slight change in career?

I have a BFA in Illustration and currently make a living with freelance work and a part time day job. I was thinking about going back to school and changing my studies for a better career. Ideally, I'd like to go into art therapy, but from what I've read it seems like you need more of a psychology background than an art background. If I want to switch my career path to something like art therapy/psychology, would I need to start from scratch as far as college goes? Would I need to stay in the Fine Arts realm if I wanted to go straight to grad school? I'm kind of confused about how it all works, obviously! Any links to informative websites would be great as well! Thanks.