DS was the same way in preschool. I mentioned casually a couple times that DS could read and the teachers just kind of blew it off. They probably thought I meant he could read a few sight words or something. Every week they took the kids to the school library. One day at pick-up one of the teachers came up to me and said "Did you know he can read?!" I laughed and said "umm, yeah." Apparently DS had picked up a random book in the library and started reading it fluently aloud. They asked him if he had that book at home (thinking he just had it memorized) and he said "no". I think every so often from then on they tried to listen to him read but for the most part nothing really changed. He was able to read second-third grade books. It was preschool and the main focus there is not supposed to be academic skills like teaching kids advanced math or reading, but more social and self-help skills, so I couldn't complain too much. But I did feel bad for DS having to sit through boring lessons about words that start with the Letter F or how to count to 20. In Kindergarten I got a little more pushy, but still not much happened. When my older kid (DD) was in K we ended up just grade accelerating her since she had the K curriculum mastered and she was 7 weeks off from the age cut-off (so not much younger than the kids in the next higher grade). Good luck--it's very hard to get people to teach advanced concepts in preschool and kindergarten. Now in first grade I'm expecting more but it's still not really happening. DS is testing about 2.5 years ahead in math (he already knows all the division and multiplication facts for instance) and his teacher claims she is giving him advanced math in his work packet but I doubt it's really that advanced or that he's spending much time on it. They can't subject accelerate him for math because it doesn't work with the schedule and I don't want to grade accelerate him because he is 2e(and they probably wouldn't allow him to anyway). Be prepared for a struggle in terms of getting him work at his level.
