Section 51510 Of Article 2. Prohibited Materials From California Education Code >> Division 4. >> Title 2. >> Part 28. >> Chapter 4. >> Article 2.

. Except as to textbooks approved by the state board or a county board of education, no bulletin, circular, or publication may be used as the basis of study or recitation or to supplement the regular school studies if the material contained in the bulletin, circular, or publication has been disapproved by the governing board of the school district in which the school is situated.