Email Etiquette

In IT we've been doing this task on how to write a proper email, how to write an email to your teacher, and what the difference is between an email to your teacher and your friend. We had to first listen to a video that would teach us about email etiquette, and then we had to write 5 points to remember when writing an email to a teacher. Then we all wrote an email to our teacher asking her a question about anything school related. This was to kind of test to see if we used those 5 points when we were writing to our teacher. I don't think I learnt much from this because I already do these things when I email a teacher.