Glenlyon Preparatory School for boys was established on the Beach Campus location by Major Ian Simpson in 1933.

[citation needed] In June 2007, the board of directors approved a plan for comprehensive campus transformation.

The WONDER Campaign was launched in 2018 to refurbish the school's two campuses, at Beach Drive and Pemberton Woods, which was supported by a $5 million donation by Gordon Denford.

[5] On Friday, May 24, 2019, the school celebrated the official opening of the school's new junior kindergarten and kindergarten facilities and the re-dedication of the boathouse, one of the buildings originally designed by Francis Rattenbury.

[6] Setagaya Gakuen School [ja] - Tokyo, Japan[7] Chris Wylie, Canadian data consultant and whistleblower associated with the Cambridge Analytica data scandal.