A slim majority of the South Dakota House rejected a resolution to halt expansion of the Common Core State Standards.
Thirty-five representatives voted Wednesday against the bill and 31 supported it.
A few dozen constituents interested in the Common Core debate attended the session, including many supporters of the resolution wearing red shirts.
Republican Rep. Jim Bolin, of Canton, is a prime sponsor of the bill and called the standards an "educational monstrosity."
He delivered impassioned testimony twice during an hour-long debate. Bolin described the standards as a step toward federalization.
National associations developed the Common Core benchmarks for K-12 students in math and English.
Opponents of the resolution argued that the Legislature has always trusted the state Board of Education to choose standards for the state's schools.
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