Also, my son's score on Vocabulary (which is the highest rated subtest of the WISC for g loading) jumped from 25th to 90th (OK, that was the DAS, but the tests seem similar enough to be comparable) after 6 months of hot-housing on English reading (this after a year in a 70/30 Spanish immersion program where he clearly didn't get enough English overall -- we speak a different language at home).
I must say that this has changed my view of the meaning of those results quite a bit. Plenty of reasons (2e, limited exposure to academics, limited exposure to formal schooling) to see depressed scores. Not sure if it works the other way round -- are overinflated test results that common?
