(a) Each teacher shall endeavor to impress upon the minds of the pupils the principles of morality, truth, justice, patriotism, and a true comprehension of the rights, duties, and dignity of American citizenship, and the meaning of equality and human dignity, including the promotion of harmonious relations, kindness toward domestic pets and the humane treatment of living creatures, to teach them to avoid idleness, profanity, and falsehood, and to instruct them in manners and morals and the principles of a free government.
(b) Each teacher is also encouraged to create and foster an environment that encourages pupils to realize their full potential and that is free from discriminatory attitudes, practices, events, or activities, in order to prevent acts of hate violence, as defined in subdivision (e) of Section 233.