One thing I've noticed is that, I get high conduct grades. Even if I'm noisy, I still end up as a conduct awardee. Oh it's fun to be me! So here is a guide on how to have high conduct grades or how to make teachers think you're a goody two-shoes even if you're not.
:: Look kind, nice or sweet. When teachers don't really know you, they judge you by your looks. Keep yourself neat and clean.
:: It helps when you're a girl. Teachers know that girls are naturally more quiet and behave than boys. Besides, girls rule!
:: Don't be gay. I know someone who is really behave in class, but because he's gay, he gets very low conduct grades. Don't be lesbian either. Because girls are lucky and you are a boy, too bad.
:: Greet teachers. Say hello to them and say their name. Don't forget to give your sweetest smile. Give them some gifts too every Teachers Day, Christmas, Valentines, Last Day and if you know their birthdays, add that too. Be creative. I have a classmate before who serenaded our teacher saying sorry for being so impossible.
:: Pass projects and do homeworks. Sure you can miss a project or two, but don't do it often. Teachers would remember that and it could ruin your image.
:: Keep your eye on the teacher when chatting. When she's facing the board, be noisy. When she's looking at your side of the classroom, hush. It's best when you're sitting at the back. In my case, I'm always in the back. Because I'm tall and my last name's first letter is near the letter Z, so whether the seatplan is arranged by height or alphabetically, I end up at the back. Sometimes it's a curse though.
:: Pass notes instead of chatting. Make sure your teacher is not looking when you pass the note and don't do this when you have the type of prof who senses your every move. Jazz your note passing by thinking of nicknames for you and making it look like a chat room. Add characters from your favorite anime too. It's fun!