I think that writing punishment, especially lines, is an extremely effective punishment and should definately be used, particularly when other methods of discipline have been tried without success. People who say it doesn't work or that it serves no purpose have obviously either never tried it and never received it. Moreover, I don't buy the highly speculative (and, frankly, rather PC) argument that writing punishment makes kids not want to do academic writing assignments. Indeed, writing lines seems to me to be particularly effective because it is not academic. Rather, it is unambiguously punitive in nature. In addtion, the punishment is miserable for the kid, but easy for the teacher to check.