Earning the Vote

[Jackalope]

Historically in the USA, adding requirements to voting has been done for the purpose of disenfranchising minority voters.  Poll taxes, literacy tests, etc.  I'm extremely skeptical for that reason.

This is a fair objection. I would imagine that it would be easier to eliminate bias if the tests are administered and graded electronically, though. If the proctor never sees the test-taker, and if the tests are graded by computer, it'll be much harder to perpetrate bias.

I would also point out that how test questions can be constructed to create bias against (for example) groups who have historically been denied adequate education - which can be a coarse proxy for race.

I'll also note that literacy tests have been used for the same purpose. I see no difference here, anonymous or not.