Independent co-ed combined school (K–12) in Deakin, ACT; 1,203 students.
NAPLAN well above the national average at every tested year level; the result is a B+ overall.
Canberra Girls Grammar School is also known as CGGS and CGGS Deakin.
Canberra Girls Grammar School has an overall SchoolRank score of 68.4/100, rated "Good". This score is calculated from academic results, student growth, wellbeing, extracurricular programs, and value for money. Academically, the school scores 74/100, indicating strong performance relative to other Australian schools. The school's ICSEA (Index of Community Socio-Educational Advantage) is 1177, well above the national average of 1,000.
In 2025 NAPLAN testing at Canberra Girls Grammar School, Year 3 students averaged 458 across the tested NAPLAN domains, well above the national average of 407 for that year level, and Year 5 students averaged 532, well above the national average of 490 for that year level, and Year 7 students averaged 596, well above the national average of 540 for that year level, and Year 9 students averaged 620, well above the national average of 569 for that year level. Relative to national year-level averages, the school's strongest domain is Grammar. National averages are specific to each year level, because NAPLAN scores are scaled so older year levels score higher, a school-wide average can't be compared with a single national figure.
Canberra Girls Grammar School is a large independent combined school with approximately 1,203 students. It offers education for years K-12. As a independent school, enrolment typically involves an application process. Contact the school directly for enrolment criteria, waiting lists, and open day information.
Canberra Girls Grammar School has a student-to-teacher ratio of 10.7:1. This is below the national average of approximately 14:1, meaning students generally receive more individual attention. Support staff make up 41% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 92%, which is strong.
The Year 12 completion rate is 100%. 93% of students received a university offer.
Canberra Girls Grammar School is located in Deakin, ACT, classified as a major cities school. With an ICSEA of 1177 (98th percentile), the school community's socio-educational advantage is above average, families tend to have higher education and income levels. ICSEA measures the educational advantage of a school's community, not the school's quality, a lower ICSEA school with strong academic scores may indicate particularly effective teaching.