Cite the section that bans the teaching of black history, please?

Note section (b)(5), and feel free to refer to the Oklahoma Academic Standards for Social Studies: https://sde.ok.gov/sites/default/files/documents/files/Oklahoma%20Academic%20Standards%20for%20Social%20Studies%208.26.19.pdf

Note that Grade 8, despite not being titled as such, is basically just U.S. History Part 1, and is of critical relevance to this question. (Page 36 and thereabouts is a good place to start.)