The term 'TEACHER of the Old School' can be summarized as a Marm, which is a four-letter word. A Marm is an old-fashioned term for a TEACHER, usually referring to a female TEACHER in a school setting. The term is derived from the Latin word 'magistra', meaning 'TEACHER'. Marms were typically strict disciplinarians who enforced strict rules and regulations in the classroom. They were also known for their strong sense of morality and their dedication to their students.