(CNN) In a dramatic moment of the Democratic primary debate on Thursday night, California Sen. Kamala Harris confronted former Vice President Joe Biden about his history of opposition to "busing," the policy of transporting students to schools outside their neighborhoods to try to reduce racial segregation.

Harris said she was herself part of a busing program in California. She also said she was part of only the second integrated class at her school.

California-based radio host Larry Elder and others, citing a post on the conspiracy-minded conservative website Gateway Pundit, accused her of lying about her school's integration history.

She was not lying. In fact, the school district confirmed her claim to CNN.

Facts First: Harris was indeed part of the second integrated class at Berkeley's Thousand Oaks Elementary School: she entered school in 1969, and the plan to desegregate the school was implemented in 1968.

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