I wouldn't discount the WISC III simply because it was an older test. These tests change very little from one version to the next, most changes you notice will be in questions designed to cater to a particular minority group to boost scores of certain groups.
The norms become inaccurate over time, which is a big reason that the norms have to be updated every so often; it's not done just to cater to minority groups as you suggest. The WISC-III is about to become
two revs out of date. In addition it's likely that many programs wouldn't accept such an old test-- Davidson doesn't, for instance. The tester simply shouldn't be using such an outdated, outmoded test, especially if there wasn't full disclosure up front.
