Potential presidential candidate and Ohio Gov. John Kasich defended his support for Common Core on Friday, claiming the standards were developed by governors and adopted locally. Critics argue that Common Core was written behind closed doors with little evidence governors were closely involved, then forced on schools by the federal government.

“Governors themselves wrote the standards,” Kasich said at the National Review Institute’s Ideas Summit. “We’ve implemented the standards. I didn’t implement them, Obama didn’t implement them, nobody did. The local school boards have adopted the standards, and now, the curriculum is being written by local school boards. I don’t know what’s wrong with that.”