Presidential candidate Rick Santorum says he knows who's responsible for students' abysmal history test scores. According to the Republican hopeful, it's not the students, teachers, parents or school administrators -- it's the left.

Speaking to the Story County GOP Central Committee in Ames, Iowa, Santorum addressed a report released last week suggesting only 12 percent of high school seniors are proficient in history.

"This is, in my opinion, a conscious effort on the part of the left, who has a huge influence on our curriculum, to desensitize America to what American values are so they are more pliable to the new values that they would like to impose on America," the presidential candidate said.

Santorum also made headlines today for unrelated remarks he made during his stop in Iowa. The former senator criticized Attorney General Eric Holder for his support of prosecuting terror suspects in civilians courts.

"Maybe he is eating mushrooms," said Santorum. "I don’t know what he is doing. You can’t even make this up."

Via ThinkProgress comes video of what Santorum had to say about the educational matter.

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