BBSC has a strong sense of school pride and this is generated through the interhouse competitions. The main interhouse competitions include the Swimming Carnival, Cross Country Carnival and Athletics Carnival in which all students compete for house points to win the house shield. Students also compete for individual honours in the competition for age champion and runner up. Bayside encourages students and parent's participation in such days allowing house colours to be worn on the day, making the carnivals loud in both colours and cheers.
These houses are Campbell (Black), Galea (Blue), Lynch (Yellow) and Morgan (Red).
As these events are held on school days' students are required to attend and senior students furthermore required as it is a prerequisite for gaining senior badges and formal invites. On top of house bragging rights these meets form a setting that allows and trials for selection to compete at the Bayside District events that can lead into Metropolitan East and even State selection.