Many of its teachers and older pupils were serving in the army, and the school building itself was requisitioned by the German military.

The school's name was changed to Helmholtz-Gymnasium in honour of another German physicist, Hermann von Helmholtz, and it once again became co-educational.

[2][1] During the post-war years, the school experienced increasing problems of over-crowding resulting in it having to operate on split sites and provide classes in shifts.

The program is designed to enable talented young athletes to train at a high level without sacrificing their education.

The school's competitive sports program focuses on basketball, volleyball, rugby, hockey, gymnastics, swimming and athletics.

Acquired in the early 1960s and comprising three houses with classrooms, it is used by the school for residential field trips and nature study.