[dragonwriter]

It's absolutely legal. Like any other screening tool that has significantly differential impact by race, it's only legal when it is sufficiently demonstrably related to performance in the specific jobs for which it is used as a screening tool.

There is a popular myth that it is illegal because of a case where it was found to be illegal in the specific manner in which it was used.

https://en.m.wikipedia.org/wiki/Griggs_v._Duke_Power_Co.#