He sounds very similar to my DS who is now in 4th grade, except DS has very obvious issues with motor coordination. He had the same gap between verbal and nonverbal ability. But achievement testing shows reading/math both above the 98th percentile. His pragmatics profile showed some of the same deficits. He is NOT diagnosed w/ autism, we had him evaluated several times and he just doesn't meet the critiera. But he definitely has something else going on that is causing his issues (doctors note something is probably going on w/ his cerebellum because his motor skills are also really poor and he has hypotonia).
He does much better with written expression when he types and the same was true of my daughter, who had similar writing issues. the TOWL wasn't even scoreable because she didn't write enough words for the story. Now that she is 11 she is doing much better with her writing. Her issue wasn't linked to verbal ability (which scored 99th percentile on the WISC), it's linked to her executive functioning issues and ADHD. She uses keyboarding and speech to text as needed but the problem seems to be diminishing now that she is getting older. Even though she didn't have any obvious motor deficits she also had very slow handwriting. She would trace over and over letters practically ripping through the paper.
