Soon after being awarded $145,000 in a work-related-injury lawsuit against New York Central Railroad on February 14, 1968, Hutton Gibson relocated his family to West Pymble, Sydney, Australia. Mel Gibson was 12 years old at the time. The move to Hutton's mother's native Australia was for economic reasons, and because Hutton thought the Australian military would reject his oldest son for the Vietnam War draft.
Mel Gibson was educated by members of the Congregation of Christian Brothers at St. Leo's Catholic College in Wahroonga, New South Wales, during his high school years.