Which Australian school did Prince Charles attend for six months in 1966?

Timbertop is a full-time boarding, co-educational campus of Geelong Grammar School located near Mansfield, Victoria, Australia.

Established in 1953, by then Headmaster James Darling, Timbertop is compulsory for all year nine students attending Geelong Grammar School. As of 2017, approximately 240 boys and girls attend Timbertop, who participate in a wide variety of physical activities including running, hiking, and skiing, as well as a normal academic routine. Additionally, students at Timbertop do not have access to devices such as computer, phones, or digital cameras. The majority of communication from students to family and friends off campus is done through letters.

In 1966, Charles, Prince of Wales, attended Timbertop for six months. The event was widely publicised. In 1973, Prince Charles said that his time at Timbertop was the most enjoyable part of his whole education.