Dr. said she hasn't seen children who needed extended norms during testing. She specializes predominantly in Gifted/2E. I'm thinking DD wouldn't fall into the "extended norm" category as I can't imagine we wouldn't have noticed that level of giftedness long ago when she was much younger. As it stands, I'm already feeling a little stupid for not realizing sooner that she might have some educational needs beyond her classmates of the same age. Then again - she might just be a very strong reader with a great memory who happened to do well on her OLSAT (here I go again....).
With respect to cost, I made calls to several Dr's who came recommended by a variety of sources. Cost for testing, consultation and hourly rates were all within a very close margin of one another. At this point, I think we just need to go with someone who we feel comfortable with and who our daughter will most likely feel comfortable with. Who really needed that trip to Cancun this spring anyhow??
Just another huge thank you to everyone who has responded, taken the time to read my dither and comment/share personal stories. This forum has provided a huge show of support and encouraged me to "go with my gut" even though our concerns haven't necessarily been met with full recognition by DD's teacher. We're committed to finding out where DD is with respect to ability vs. achievement and I think both the WISC and WIAT will give a us better picture rather than the WISC alone. It's a good place to start and will try and get DS set up too!
Time to stop pontificating and simply pull the rip cord....