To become an ABA therapist, you typically start as a Registered Behavior Technician (RBT) with a high school diploma, 40 hours of training, and certification. Advanced roles like Board Certified Behavior Analyst (BCBA) require a master’s degree, verified coursework, 1,500–2,000 hours of supervised experience, and passing the BCBA exam. Many states also require licensure. Career paths range from entry-level therapy to clinical leadership, with growing demand in schools, clinics, and home-based care.