PEAK is a Relational Training System made up of 4 modules (Direct Training, Generalization, Transformation, and Equivalence). This empirically supported assessment allows for a summary of skills and areas to target for improvement across all modules including: foundational learning skills; perceptual learning skills; verbal comprehension skills; and verbal reasoning, memory, and math skills. The Generalization module can help identify areas to target for skill development to promote the emergence of generalized, flexible, and adaptive language skills that will open the door to many new experiences. The equivalence module evaluates a learner’s current ability to derive novel responses that have never been directly taught. The transformation assessment establishes a learner’s current ability to expressively and receptively relate events in a variety of contexts that promote learning.