I can see how exposure to additional math content should improve a kid's score on the same level of the SCAT math, but I don't think that you can really say the same for the verbal section. The SCAT verbal test covers only one type of language arts question--analogies. A kid could be learning quite a lot of useful language arts skills and content without any noticeable improvement in their ability to solve analogies. I would not be concerned.
MAP or Explore are probably more useful if you want to track year-to-year progress.
