1. Take the job seriously, each and every day. Teaching is serious business. You are charged to mind and educate minors. You see Thai teachers screwing around? You're at the wrong school - or the right one.
2. Wear professional clothing. A button down collar shirt at the very least.
3. Don't show up a few minutes before class or worse, late.
4. Don't show deference especially to admin and head teachers. Even cleaning staff you should be polite to.
5. Don't turn on the air-conditioning before 8 am unless it's expressly allowed.
6. Never do anything to Thai staff that would allow them to lose face.
7. Don't play games in class unless they are connected directly to a learning objective and lesson plan.
8. Plan. Plan. Plan.
9. Try not to give your lesson plans to the school if at all possible.
10. Don't give lazy teachers anything. You'll never get anything in return except headaches and more work. Sideline them fast.
11. If you work really hard in your first year, you still don't get to be head teacher.
12. Figure out fast where the pay scale tops at.
13. Never work more than 20 hours a week.
14. Never do more than three courses.
15. Don't work in a school that does not have functioning LCD and audio in all its rooms.
16. Remember all your kids names. Every single one.
17. Never drink more than five drinks the night before work. 0-2 is preferable.
18. Get a good night's sleep and never look like you've been out all night when you step in the office or in class.
19. Tell the students your door is always open - and mean it.
20. Learn what the TCT is and does. Become an authority on it as well as your visa type.
21. Don't stop caring. If you run into trouble, care more.
22. If it's not working for you, get out. You're not fooling anyone.
23. Never do anything, ANYTHING, creepy towards the students. Never make off color comments or mention the Royal family or politics.
24. Don't bring sandwiches to work. That's just gay.
25. Love your students.
Finally, learn wtf you are doing in a classroom immediately. Learn about the four skills, pronunciation and yes grammar. Learn how to properly run skills assessments and how to write a lesson plan.