FCPS is in the infant stage of recognizing 2E. I would recommend full testing, not just the WISC with an experienced person. IME, the tesitng thorugh Fairfax county was minimal, just enough to establish need but did not delve too deeply to figure out exactly why the need was there.
YDS is 2E and he goes to one of the "highly touted" FCPS Middle Schools and we have had to do quite a bit of education with them. Luckily, we connected with a few people up stream that cover the the whole county and they came in and read them the riot act and did some teacher education. Plus, there is no middle or high school in FCPS, that I know, that has team taught Honors, AAP or AP classes. That hinders many 2E children. We have struck the middle ground and have YDS take English in gen ed as a team taught class and the rest the core classes in the advanced curricula with a boatload of accommodations. Next year we are doing the same in HS. At home, I make sure he reads (listens to) the books he is missing in the higher English classes.