St Andrew's Grammar is a co-educational independent school in Dianella offering a traditional, academically intense environment within a tight-knit community.
NAPLAN averaging +28 above national year-level averages and solid student growth; the result is a B+ overall.
St Andrew's Grammar is a co-educational independent school in Dianella offering a traditional, academically intense environment within a tight-knit community. The school houses a dedicated learning support unit and STEM building, and runs the Perth Glory School Academy for students with soccer aspirations. Entry is selective via ACER Scholarship Test. The school suits families seeking structured, academic rigor and those with particular interests in football development.
St Andrew's Grammar is also known as SAG Dianella.
St Andrew's Grammar has an overall SchoolRank score of 63.8/100, rated "Good". This score is calculated from academic results, student growth, wellbeing, extracurricular programs, and value for money. Academically, the school scores 65/100, indicating moderate performance relative to other Australian schools. The school's ICSEA (Index of Community Socio-Educational Advantage) is 1078, well above the national average of 1,000. Notably, the school shows strong student growth over time (62/100), meaning students tend to improve well regardless of their starting point.
In 2025 NAPLAN testing at St Andrew's Grammar, Year 3 students averaged 449 across the tested NAPLAN domains, well above the national average of 407 for that year level, and Year 5 students averaged 522, above the national average of 490 for that year level, and Year 7 students averaged 551, above the national average of 540 for that year level, and Year 9 students averaged 594, 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.
St Andrew's Grammar is a medium-sized independent combined school with approximately 796 students. It offers education for years PP-12. As a independent school, enrolment typically involves an application process. Contact the school directly for enrolment criteria, waiting lists, and open day information.
St Andrew's Grammar has a student-to-teacher ratio of 10.1:1. This is below the national average of approximately 14:1, meaning students generally receive more individual attention. Support staff make up 28% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 92%, which is strong.
St Andrew's Grammar is located in Dianella, WA, classified as a major cities school. With an ICSEA of 1078 (78th 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.