Email etiquette is important for students to follow when communicating with teachers. Some key points of email etiquette include: including your full name and class period in the subject line; keeping emails brief and proofreading for errors; using a positive tone and avoiding negative language; properly renaming any attachments; stating the full context when making a complaint; and using email for simple questions but not large assignments or topics requiring discussion. Following these guidelines helps ensure students' emails are clear, concise and professional.