If you want further assessment, my inclination would be to push for the PAL-II (but remember that I'm biased toward assessment!), as it assesses some areas that are not included in the KeyMath (such as fluency). The accompanying PAL-II user's guide CD also makes intervention recommendations.

I doubt they own a PAL-II Math, which would be why no one is familiar with it. It's not that expensive, as these things go (under $400, vs well over $1000 for a WISC), but might not be in their budget.

Though the current approach does appear to be meeting the immediate instructional needs.

...pronounced like the long vowel and first letter of the alphabet...