So far, no parent or administrator has raised any objection. Discipline comes far, far behind communication in our list of priorities. It is the wish to communicate which should be treasured once it is present. Here are some tips from the past and from my days as a teacher trainer, which may still work for those who are having a tough time. Show the class you enjoy teaching them.
Enthusiasm does work.
Be definite about what you demand of them, and consult them whenever possible. Give short tests and return them immediately. Return everything as soon as possible. Vary your introductions and activities. Get as many students as possible involved in projects, eg school newspaper, drama, exhibitions, competitions and contacts outside school.