The AAC Grid Size Assessment helps determine the largest grid a student can visually attend to and physically access with accuracy and consistency. Clinicians should select the maximum grid size the student can handle—not the smallest—ensuring future language growth without unnecessary layout changes.

Best Practice Tip:

If vocabulary load is a concern, start with the appropriate grid size but hide unused buttons. This allows for gradual language introduction while preserving motor planning, which is critical for AAC users to develop automaticity and confidence. Once a layout is set, avoid moving button locations. Consistency supports motor memory, allowing users to navigate by feel and visual pattern—not just label recognition. This stability accelerates learning and reduces frustration.