Students may express their beliefs about religion in homework, artwork, and other written and oral assignments free from discrimination based on the religious content of their submissions. Homework and classroom assignments must be judged by ordinary academic standards of substance and relevance and against other legitimate pedagogical concerns identified by the school district. Students may not be penalized or rewarded on account of the religious content of their work. If an assignment requires a student's viewpoint to be expressed in coursework, artwork or other written or oral assignments, a public school shall not penalize or reward a student on the basis of religious content or a religious viewpoint. In such an assignment, a student's academic work that expresses a religious viewpoint shall be evaluated based on ordinary academic standards of substance and relevance to the course curriculum or requirements of the coursework or assignment.