By the numbers: A few highlights from the survey, conducted for the foundation by Lincoln Park Strategies:

People did relatively well on the most basic questions. Seven out of 10 knew that Thomas Jefferson wrote the Declaration of Independence and that Franklin Roosevelt was president during World War II.

But only 43% knew that Woodrow Wilson was president during World War I (nearly one out of four thought it was Roosevelt), and only 56% knew which countries we fought in World War II.

Fewer than a third could correctly name three of the original states.