If kids brought home grades like this, they'd be grounded.
The Secular Coalition for America rated all presidential candidates on nine issues, including church-state separation, civil rights, evolution and taxpayer funding of religion.
At the bottom of the class is Michele Bachmann, who scored straight F's before bowing out of the race after the Iowa caucuses. She was followed closely by former Sen. Rick Santorum and former House Speaker Newt Gingrich, who both scored a string of F's and a single C.
At the top of the class were President Obama with three A's, three B's and a C -- a modest mixed bag -- and former Utah Gov. Jon Huntsman with 4 B's and an A.
The report card is the first issued for presidential candidates by the coalition, said SCA president Herb Silverman, and is intended to help "secular-minded Americans" in the voting booth.
Most secularists, however, won't be voting in a GOP primary: data from the Pew Forum on Religion & Public Life show that religiously "unaffiliated" Americans tend to favor Democrats over Republicans, 55 to 23 percent.