Students expect an instructor to treat everyone in the class equally. Few professors intentionally favor certain students over others, but it is probably impossible not to like some students more than others. Differences in liking may foster differences in interactions, such as allowing certain students to dominate discussions. Even subtle differences in how students are treated may lead to perceptions of partiality where none exists. Instructors should carefully monitor their behavior to avoid giving the impression of partiality.
Respect involves treating students politely.
Keith-Spiegel et al. An instructor who is perceived as impatient or demeaning, either directly through comments or indirectly through tone of voice, facial expressions, or posture, loses students' respect. Patience is especially difficult when students actively misbehave in class. However, students also expect instructors to be polite in those situations. Instructors who face disrespect should try to remain civil and calm, thereby modeling the appropriate behavior for students.