Fox News looks at the federal push for Common Core standards and the pushback in some states.
Nine states that adopted Common Core are having second thoughts, reports the Washington Post.
Some states are seeking to slow implementation, while others are trying to repeal the standards altogether. Legislation pending in some states would prevent adoption of standards in other subjects, such as social studies or science.
Forty-five states and the District of Columbia adopted the reading and math standards. Minnesota adopted only the reading portion and Alaska, Nebraska, Texas and Virginia are staying with their own standards.