St Peter's Collegiate Girls' School serves families in and around Stonyfell, Adelaide as a medium-sized independent combined school offering R-12.

Academic performance is consistently strong across primary and secondary year levels.

The school’s recent results show a generally stable pattern rather than a sharp upward or downward trend.

In socio-educational terms, the school has a highly advantaged profile, with an ICSEA score of 1180 and an ICSEA percentile of 99.

After allowing for ICSEA, sector and state, the school compares favourably across both primary and secondary results.

Enrolment is around 873, so the school can be described as medium-to-large in scale, and it has expanded noticeably in recent years.