Common Core implementation by state

46 states initially adopted the Common Core State Standards, although implementation has not been uniform. At least 12 states have introduced legislation to repeal the standards outright, and Indiana has since withdrawn from the standards.

Among the territories of the United States, the U.S. Virgin Islands, Guam, the Northern Mariana Islands, and the American Samoa Islands have adopted the standards while Puerto Rico has not adopted the standards.

Alabama initially adopted the Standards, but the state rescinded adoption in November 2013. Governor Robert Bentley cited federal interventions as a reason for his opposition, saying he was opposed because of "federal control of our education system. And I'm opposed to the Common Core because of the potential for federal intrusion." The state's curriculum, now called the College and Career Ready Standards, is still aligned with the Common Core standards.

Alaska opted out of adopting the Standards. While debate persists in Alaska, the state has adopted its own new standards called the Alaska Content and Performance Standards that Education Commissioner Mike Hanley has described as "substantially similar" to the Common Core standards, and many local districts have chosen to adopt the Standards even though the state has not. Parents have the right to opt their kids out of standardized testing.

Arizona formally adopted the Standards. In 2014, Governor Jan Brewer signed an executive order that removes references to "Common Core" from the state's math and reading standards, although they are still aligned with the national Standards. The name of the standards have been changed to "Arizona's College and Career Ready Standards." In the legislature, the Senate Education Committee passed a bill that would withdraw Arizona from Common Core. As of October 26, 2015, the Arizona State Board of Education elected to repeal the Common Core Standards in a 6-2 vote.

Arkansas formally adopted the Standards in 2010. Multiple proposals during the 2014 fiscal year in the state legislature to delay implementation were not adopted. Arkansas is a governing member of PARCC.

California formally adopted the Standards. Governor Jerry Brown allocated $1.25 billion in the state budget to assist with implementation, but also assured educators that Core-aligned tests will not be used as part of teacher evaluations through the 2015-2016 school year. The grant remains controversial with California teacher's unions because of concerns of the use and size of the grant. California is a governing member of SBAC.

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Wikipedia