Our district uses a similar test (not MAP) but it says on the test website that the scores are expected to move more slowly once kids are in middle school. So in second grade a child might have a 300 point gain in a year and in 8th grade they might have a 50 point gain. It's probably because of the ceiling. The other moms in the gifted chapter said they asked the school to give the next level test up, once those scores start leveling. But in our district the ceiling is higher. I ask for the "suggested learning objectives" that the test report gives and most standards listed are at around an 8th-9th grade level for both reading/math so I'm not sure how much longer the test will work for DD either. I wouldn't worry about the "no growth" though--it's a problem with the test, not her.