Well, more than most Americans, it seems.
Hat-tip to A conservative blog for peace for the ISI civic-literacy quiz:
Are you more knowledgeable than the average citizen? The average score for all 2,508 Americans taking the following test was 49%; college educators scored 55%. Can you do better? Questions were drawn from past ISI surveys, as well as other nationally recognized exams.
You answered 29 out of 33 correctly — 87.88 %