The best way to help autistic students who can't speak succeed in school is to treat them the same way as every other student and take them seriously. Autistic students may communicate differently but they can go to school and get an education along with everyone else; they deserve the same opportunities and encouragement.
See the full interview with Eric Garcia: https://www.readingrockets.org/teaching/experts/eric-garcia
For more resources on ASD, visit Reading Rockets: https://www.readingrockets.org/reading-topics/autism-spectrum-disorder
See more Reading Rockets interviews with experts: https://www.readingrockets.org/teaching/experts