Rapid Prompting Method (RPM) is a teaching method developed by Soma Mukhopadhyay to teach her non-verbal autistic son to communicate. It involves constant engagement between a teacher and student using paper, pencil, and an alphabet board. The teacher asks fast-paced questions to keep the student focused on the task. RPM works to overcome challenges autistic learners face in processing multiple senses at once by breaking down communication into focused steps of choosing letters to spell words through pointing. Soma went on to create the organization HALO to promote RPM for autistic children.