Last year, there were no constructed response items on the math tests, only multiple choice type items. When I asked the math content development team last year about spell check, they told me there was no reason to have the spell check tool on math tests because there weren’t any items that required it. So, this year, when we updated the accessibility manual, we included that spell check is not available for math (or ELA).
However, this year math items have been added to the tests that are constructed response. For those constructed response items spell check is available. Somehow, I missed that memo. Once I found out, we did update the accessibility manual and it now does say that spell check is available for some math items (i.e. for constructed response items).
Specifically, the manual now states:
This feature allows the student to check the spelling of words in student-generated responses.
Spellcheck is available only for some mathematics, science and social studies items that require a student to write/type a response. Unlike some word processing programs, the Student Testing Site does not automatically highlight misspelled words as the student types. Students must click the ABC button to check spelling. Spellcheck is not allowed on the English language arts tests.
It's worth noting that spelling does not count against the student for those tests where spell check is available.