Mrs Baron was evil, vile and would rip you to shreds because the cleaners had knocked something over after you'd gone home.
One ingenious teaching method employed by this beast of a woman was as follows: instead of telling the class to be quiet, she would sit at her desk with her hand in the air in a type of Nazi salute. One by one the children would notice this and do the same. Her logic was that the last child to do it would be the child that was paying the least attention - and thus talking the most. Unfortunately, it could also mean that the child who wasn't acting like a member of the Hitler youth was actually getting on with their work.
Ironically Mrs Baron was barren. She left at the end of the school year to adopt a baby.