WOODSTOCK, Vt. - Responding to President Obama's self-assessment of an "incomplete" grade on his ability to fix the economy, GOP presidential nominee Mitt Romney said today that an incomplete "usually means you've got to go back and take the course again."

"I don't think the American people want to see this president get another four years," said Romney in an interview with Fox News in New Hampshire today, where the candidate emerged briefly from days of debate prep and days off that have kept him out of the view of cameras, aside from a brief jaunt on his speedboat earlier in the week.

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Romney was asked by Fox News about Obama's recent comment during an interview with a Boulder, Colo., television station, in which the president said he deserves an "incomplete" rather than a letter grade when it comes to his performance fixing the economy.

"Anyone who wants to let him try it again I think would be making a big mistake," said Romney. "Those who think they are better off than they were four years ago, they may decide to vote for him but the great majority of Americans who recognize we're not better off than we were four years ago recognize that his policies are not what is needed."

Stopping by a nearby pizza place, Romney took a few questions from reporters, including one about whether he watching Michelle Obama's speech last night at the DNC.

"No, I didn't see that and I'm certainly not going to make any comments about the first lady's speech other than that I respect her, think she's a lovely person and a fine mom," said Romney. "I do think that having looked at the text of the first day of the convention that it's interesting that there's a couple of things that can't be said. One is you've heard no one stand up and say that people are better off than they were four years ago. They really can't say that. They can't say it in all honesty."

Romney did refer to the nation's deficit hitting $16 trillion this week and also the number of people on food stamps reaching a record 47 million Americans.

Asked how that secretive debate prep is going, Romney offered a joke.

"I'm just glad I won't be debating Rob Portman in the final debates. He's good," said Romney.

ABC News' Steven Portnoy and Devin Dwyer contributed to this report.

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