Thank you for your reply.
DS7 & DD7 already took the SCAT and we really just downplayed it as something we were squeezing into our schedule, which as it turned out, took less than an hour, including the sign in, tutorials, and questionnaires.
In response to your question, I "prepped" DS7 and DD7 (by giving them the sample questions provided by CTY) because it appears that is the reason why CTY provided those questions in the first place.
Actually, I personally disagreed with the idea of "prepping" for the SAT, as the skills tested on the SAT really should be acquired over the course of the student's middle and high school academic career. However, although I never prep for the SAT and only took it once, I don't have any issues with other people prepping, especially in an attempt to remediate for past neglects.
Conversely, I think that you can prep for an IQ test, at least for certain portions of the WISC IV, although perhaps not in the traditional sense of the word "prep" (long-term immersion versus short-term cramming). For example, a large component of the verbal comprehension cateogry depends on exposure to vocabulary, ideas, social norms, and general knowledge. That's why a child born into an upper-middle class family with consistent (year after year) exposure to enriched experiences and conversations should score much higher in "verbal comprehension" than an impoverished kid raised in the slums with barely literate parents, especially in the younger years.
Anyhow, I digress. Most of my original questions were out of curiosity. Actually, between DS & DD, I think I finally figured out a few things. Especially for younger children, it can hard to discern relative difficulty unless you don't know the answer.