Contingent praise is widely recognized as a universal, practical, and highly effective classroom management tool. While previous research has examined the effectiveness of performance feedback to increase teachers’ use of contingent praise in the classroom and to observe its effects on students’ behavior, no research exists on the effects of increased ratios of praise-to-behavior correction statements by paraprofessionals in the classrooms of preschoolers diagnosed with autism spectrum disorders (ASD). This research was conducted in an urban, specialized pre-school program, for young students with developmental disabilities. The researcher implemented a performance feedback protocol, measuring two paraprofessionals’ ability to achieve a target 1:1, followed by a 4:1 ratio of praise-to-behavior correction statements. Students’ on-task, off-task, and disruptive behaviors were also measured. Results demonstrated that: (a) performance feedback was an effective and well received tool for in / Applied Behavioral Analysis