The school has a Native Plant Sanctuary which is one of the few remnants of the once-extensive Cheltenham Heathland. With the assistance of Greening Australia, a number of paths that meander through the sanctuary have been created so  native grasses and rare greenhood orchids are protected from foot traffic.

The area provides many learning opportunities for environmental Science and is a lovely place for quiet, reflective times. Each year students plant a selection of locally grown indigenous species, under the expert guidance of Bayside Council’s bushland crew.

Winter and Spring are the most colourful times in the Sanctuary. The traditional bright yellow of the wattles contrasts beautifully with the grey-greens and blues of the manna gums and the red correa bells. The tea-tree then produce their delicate white flowers that often last until the chocolate and flax lilies bloom in late Spring.