We have a chameleon kid in school too, and it makes advocacy more difficult. He did not like to stand out, and he is an incredibly well-behaved student. He would not want to make waves by asking for more. He certainly would not speak up or volunteer anything in Kindergarten, with the consequence of the teacher thinking he was a little slow verbally. (This was quite shocking to us, since he was an incredibly verbal kid with a huge vocabulary.)
If your DD seems unhappy with school, you could investigate further into testing this year. Some schools must honor parent requests for testing, though it's not usually advertised.
