St Andrew's College, with the Diocesan School for Girls (DSG) and St Andrew's Preparatory School form a unique family of schools catering for boys and girls from their pre-primary years through to Matric level.

The relationship between St Andrew's College and DSG gives the boys and girls the best of both worlds, autonomy and separate emphases and yet a largely co-educational environment for many academic, cultural and social activities. Adjoining campuses facilitate combined classes from Grade 10 upwards and promote healthy and natural interaction between boys and girls.