That "Civil Literacy" thing.

Okay, so I'm way late getting on board the AmericanCivicLiteracy.org 2008 Civics Quiz (32/33, by the way - I missed the harder Roosevelt question), but I haven't seen this angle approached: Has anyone checked to see if the respondents are literate, full stop? It seems to me that misunderstanding the questions and/or answers (some of which have difficult wordings) could be a factor in the 71% "failure" rate.

Just thinking about possible controls on the test.