Year one: Welcome to our school. We have run out of chalk. Please buy your own.
Year three: Here's a handout on the workshop model. Figure out how to incorporate it into your own teaching. I'm observing you in three days.
Year five: you must pay for your own masters' degree. Figure out how to do it. You have one more year.
Year seven: We're using an ICT model now, teachers must learn how it works. Here's a book, Read it carefully. I'm observing you in three days.
Year ten: Ed wars! You've been doing it wrong this whole time. I want to fire you and all your colleagues and get some big stars to say in movies how important you've been and how much you've messed up.
Year fourteen: Let's restore dignity to teachers and to teaching.
Year fifteen: BUT ..BUT IT IS YOUR RESPONSIBILITY TO HELP OTHERS WHO HAVE RECENTLY ENTERED OUR PROFESSION!!! DON'T YOU SEE, PEOPLE LOOK TO YOU TO TRY TO FIGURE HOW TO DO THIS JOB! THIS IS AN ETHICAL DUTY!