At least a half dozen schoolchildren pointed to one of their classmates after Ben CarsonBenjamin (Ben) Solomon CarsonTrump administration to make it easier for adoption agencies to reject same-sex couples: report READ: Ben Carson's letter clarifying testimony on protections for homeless transgender people Exclusive: Carson seeks to clean up testimony on protections for homeless transgender people MORE asked them to pick out the worst student in class, according to a Des Moines Register reporter.

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Speaking to a large crowd at an Iowa elementary school on Thursday, the Republican presidential hopeful said to the fifth-grade class at Isaac Newton Christian School, “Who’s the worst student?”

Before he could utter a “just kidding,” several of the students pointed to one boy standing in the audience.

Carson later said he often felt like the dumbest kid in class growing up before turning his life around and becoming a world-renowned neurosurgeon.

It’s a line he’s often used in campaign speeches to highlight his inspirational personal story, the subject of his book “Gifted Hands.”

He met with the student backstage after the rally and encouraged him to become a neurosurgeon.

The 10-year-old later said that he wasn’t embarrassed by the incident.

“No,” he said when reporters asked him if his feelings were hurt.