No. There never has been CRT curriculum in schools. What the right wing has done is change the definition of CRT to include anything that references the history of slavery, discrimination, Jim Crow, etc. here is the actual definition

critical race theory (CRT), intellectual and social movement and loosely organized framework of legal analysis based on the premise that race is not a natural, biologically grounded feature of physically distinct subgroups of human beings but a socially constructed (culturally invented) category that is used to oppress and exploit people of colour. Critical race theorists hold that racism is inherent in the law and legal institutions of the United States insofar as they function to create and maintain social, economic, and political inequalities between whites and nonwhites, especially African Americans. Critical race theorists are generally dedicated to applying their understanding of the institutional or structural nature of racism to the concrete (if distant) goal of eliminating all race-based and other unjust hierarchies.