Billabong High International School offers a diary of extra-curricular activities satisfying interests from philosophy to climate change, maths to gardening, dance to animal welfare. Whilst ensuring academic excellence and intellectual challenge, equal attention is given to supporting the development of the whole person, aiming to inspire confidence, individuality and self-esteem. Consequently, the school is a positive and energetic community where students are encouraged to take advantage of the abundant opportunities open to them.

Extra-curricular activities also enable the students of Billabong High  to compete externally and they regularly win prizes at various levels in a wide range of specialties.