Government all-girls secondary school serving years 7–12 in Manly Vale, NSW, with 1023 students.
NAPLAN averaging +41 above national year-level averages; the result is a B+ overall.
Northern Beaches Secondary College Mackellar Girls Campus is also known as NBSC, Mackellar Girls Campus and NBSC Mackellar Girls Campus.
7 HSC Top Achievers — #21 of 240 New South Wales schools.
Northern Beaches Secondary College Mackellar Girls Campus has an overall SchoolRank score of 66.2/100, rated "Good". This score is calculated from academic results, student growth, wellbeing, programs, and value for money. Academically, the school grades B+ (Good) against other Australian schools. The school's ICSEA (Index of Community Socio-Educational Advantage) is 1115 (88th percentile; the national average is 1,000).
In 2025 NAPLAN testing at Northern Beaches Secondary College Mackellar Girls Campus, Year 7 students averaged 573 across the tested NAPLAN domains, above the national average of 540 for that year level, and Year 9 students averaged 618, 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.
Northern Beaches Secondary College Mackellar Girls Campus is a large government secondary school with approximately 1,023 students. It offers education for years 7-12. As a government school, enrolment is generally available to students living within the school's designated catchment zone. Families outside the zone may apply for out-of-area placement subject to availability.
Northern Beaches Secondary College Mackellar Girls Campus is a government school, so there are no tuition fees. Families may be asked to contribute to voluntary school fees covering materials, excursions, and activities. The school grades A− (Excellent) for value for money, which weighs academic results against the cost of attendance.
Northern Beaches Secondary College Mackellar Girls Campus has a student-to-teacher ratio of 14.4:1. This is around the national average of approximately 14:1, meaning class sizes are typical for Australian schools. Support staff make up 17% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 88%, which is good.
The school had 7 top achiever places across 2025 HSC courses. The Year 12 completion rate is 100%.
Northern Beaches Secondary College Mackellar Girls Campus is located in Manly Vale, NSW, in a major city. Its ICSEA is 1115 (88th percentile; the national average is 1,000). ICSEA measures the advantage of a school's community, from its parents' education and occupation, not the school's quality. A school with a lower ICSEA and strong academic results may be teaching particularly effectively.