Mississippi Code Title 37. Education § 37-175-21

(a) Extend the school day or length of the scholastic year;

(b) Develop and establish a curriculum that is consistent with the Mississippi Curriculum Framework in the subject areas of mathematics, social studies, science, music, art and physical education; and

(c) Select, purchase and use textbooks, literature and other instructional materials that would improve educational attainment by students in the school, subject to the approval of the board.