Our DS5 (in kindergarten) got assessed at a DRA 8 (roughly corresponds with an end of kindergarten, start of first grade level). Given that he reads stuff that is closer to 3rd grade books at home it didn't fit.
What we did was ask what drove this disparity. It's important to figured out if there's something they see that you don't or they follow a hard cap on how high you go, or something else. For us, our son had/has issues with retelling or comprehension. It gave us a specific target to work on, which is good. I'd approach it non confrontationally to start with and just ask what is going on. Given that he's now bringing home dra 28 books, it's working thus far.
