We describe a training program to teach applied behavior analysis (ABA) knowledge competencies to
paraprofessional staff (N = 47) at a habilitation services agency for adults with developmental disabilities.
Before and following training, staff completed assessment of knowledge tests for three content areas:
basic learning principles, instructional strategies, and prompting and prompt-fading methods. Training
was implemented in a group format that included a standardized curriculum, didactic presentation, case
illustration, and directed discussion. Average tests scores (percent correct) for the three ABA knowledge
competencies increased from pretraining to posttraining. Practical considerations relative to large-scale
staff training are discussed.