In 2011 the school opened the new Early Learning Centre (ELC) in Hepburn Heights (across the road from the Duncraig campus) for Kindergarten to Year 2, introducing a Pre-Kindergarten, that takes place on Wednesdays, in the mid 2010s.

The school also owns a 115-acre property, the Nanga Outdoor Education Facility, consisting of bushland, field, forest and 800 metres of Murray River frontage.

The property is used for school camps and retreats, leadership development and team building activities.

St Stephen's School's "House" structure is used to decide student homerooms, sporting events, or other similar matters.

Houses are randomly assigned to students upon arrival at the school, however students with parents, or other immediate family members who attend(ed) the school will be assigned to the same house as their family members.