Following his graduation from Balmain Teachers' College, Ken Moon taught in NSW Riverina and Blue Mountains one-teacher schools in 1948-1950, and in Sydney from 1950-1961. He wrote fiction for the U.S. young adult market and ABC School Broadcast scripts, and several books. In 1961-62 he and his wife Elaine wrote their way around England and Europe for two years with their four small children, equipped with typewriters, cases of stationery and manuscripts and Correspondence School lessons.
He then worked as a secondary school librarian in Sydney while completing an Arts degree at the University of New England by distance education. He tutored at UNE while completing an Honours degree, after which he became a lecturer and then Senior Lecturer in the Department of English there. He published scholarly articles on Virginia Woolf, Alexander Pope and several Australian authors.
Retiring to Sydney in1990, he taught Literature and Writing classes with Sydney University's Continuing Education division for eight years, and published a guide to writing autobiography; and with Elaine another for 'quality fiction'; and a volume of previously published short stories. Then until 2004, he created and taught adult education courses with the WEA.
He and Elaine co-judged the 1988 and 1999 Dorothea Mackellar National Poetry Competition.