He tests in the normal range in speech and language assessments now, but that was the area in which he had the most severe delays (he used to have profound delays, using the technical description). I've wondered if he might still be having a little difficulty with more complex language like on an IQ test (perhaps with instructions or with questions that require a verbal answer). His teacher says his vocabulary is impressive, but the speech and language assessments seem to test very simple concepts and I definitely wonder if he might be having a harder time with the complex verbal instructions.
Speech is an area where we've found a huge difference between different practitioners in terms of their ability to assess the fine points of language use (not just articulation, but also expressive and social language). If you're wondering, it is certainly justified in your case to get a referral to a private SLP for detailed testing, just to establish where you stand.
After you remediate large delays like those, sometimes what's left are subtle issues that are treatable but not catchable by school.
It's so great when a child comes that far!
