Each school district and public school shall ensure instruction of its curriculum is factual, objective, and aligned to the kindergarten through grade twelve state content standards. A school district or public school may not include instruction relating to critical race theory in any portion of the district’s required curriculum under sections 15.1-21-01 or 15.1-21-02, or any other curriculum offered by the district or school. For purposes of this section, “critical race theory” means the theory that racism is not merely the product of learned individual bias or prejudice, but that racism is systemically embedded in American society and the American legal system to facilitate racial inequality. The superintendent of public instruction may adopt rules to govern this section.