1990 – 1999
Arising from the consideration that vocational success in the 21st century would be almost completely separated from issues of gender, in 1997 the School Council decided that St Andrew's students would be better prepared for post-school work, study and lifestyle choices if the School became co-educational in Years 10, 11 and 12. Accordingly in Term 1, 1999 the first 76 girls commenced in the Senior College. St Andrew's had become the only co-educational school in the City.
Co-education proved to be a resounding success. Female students brought a new and diversified atmosphere to the School's character. The girls benefited from learning in the city and the School's collegial environment while the senior boys matured and developed responsible attitudes to their female counterparts. From 2002 female enrolment had grown to around 150-160 girls in the Senior College in Years 10-12. Enrolments have remained at this maximum budgeted level ever since.
