Dear Ms Kimura,
Sorry of what happened about the broken ruler. I feel sorry. And I will never do it again.....
This is the apology letter that Ilham wrote to his teacher for breaking the school ruler in class. I suppose it's not so much about breaking a small plastic ruler but it's about instilling a sense of responsibility inside a kid not to destroy common property. By making the student write it down, he is aware that he has done a wrong and should do something about it. Not only that, the letter should also be acknowledged by a parent.
There was no angry lecture, just a calm explanation that the behaviour is not acceptable.