Grading metaphors were all the rage on Day 1 of the Democratic National Convention, which also happens to be the first day of school for a lot of kids.
It all began after President Barack Obama gave himself an "incomplete" when an interviewer asked him to do a self-assessment of his performance on the economy.
Republicans were quick to pounce.
"If President Obama can't even give himself a passing grade, why would the American people give him another four years?" asked the Romney campaign's Amanda Henneberg.
Obama adviser Robert Gibbs, appearing on MSNBC, said an incomplete makes sense because the nation still has "a long way to go to get back to the type of economic security that middle class families expect in this country."
Los Angeles Mayor Antonio Villaraigosa, appearing on Fox, gave Obama an "A for effort. I give him an A for making sure Americans are better off today than they were four years ago."
Obama campaign spokeswoman Jen Psaki said "an incomplete and a desire to do more is far better than a failing grade."
She awarded Republicans a "failing grade" — and faulted them for "bad study habits" and "rotten ideas," too.
— Nancy Benac — Twitter http://twitter.com/nbenac
EDITOR'S NOTE — Convention Watch shows you the 2012 political conventions through the eyes of Associated Press journalists. Follow them on Twitter where available with the handles listed after each item.