I can't speak to how much of an increase you can expect from one year to the next, but I would definitely try again. I think that test-taking is a learned skill for most kids, and I'm sure that your DD will be more comfortable the next time around.

Also, keep in mind that the SCAT verbal test covers only one particular skill (analogies). That may not be your DD's strongest verbal skill, so don't assume that she is not gifted verbally just because she didn't as well on this one test.

Good luck.