Final answer:
Textbooks and teachers are not allowed to say or promote phrases that discriminate, promote hate speech, or engage in bullying or harassment.
Step-by-step explanation:
Textbooks and teachers are not allowed to say or promote certain phrases that could violate students' rights or create a hostile environment. For example, they cannot use phrases that discriminate against a particular race, religion, gender, or sexual orientation. They also cannot promote hate speech or engage in any form of bullying or harassment. This is to ensure a safe and inclusive learning environment for all students.