How bad are the test ceilings on NWEA? Hmmmm...various DYS families with older students still taking lower-level tests (because their schools use grade instead of RIT or ability to determine the test level, including mine) have reported getting repeats of the exact same question during the same test session. As if they "broke" the test...
Here is a document that has been circulating here for a while about the ceilings:
https://docs.google.com/document/pub?id=1nA_PlvjvwFTi5vMwRxlfmmVUJo63pfwn67ZAMHaV4oU. We may have been seeing more subtle signs of them earlier, but we started to notice a real slowdown in growth on the 2-5 test as DD hit 245 in reading and 250 in math. It sounds like this is more pronounced when the test is given often and repeatedly.