According to a study by the Woodrow Wilson Foundation, only 34 percent of South Carolina residents could pass a citizenship test.
[Citizenship test: Can you pass the test those applying for US citizenship have to pass?]
North Carolinians scored slightly higher, with 39 percent.
On average, 36 percent of participants passed the test nationwide.
Researchers used a 20-question multiple choice quiz with questions taken from the actual U.S. Citizenship Test, and only two percent of South Carolina residents received A's.
"Passing" the test requires getting above 60%, or a D.
You can find more information on the study and test here.