Large co-ed government secondary (years 7–12) in Mount Lawley, WA, serving 2041 students.
NAPLAN averaging 41 points above national year-level averages and solid student growth; the result is an A- overall.
Mount Lawley Senior High School is also known as MLSHS, Mount Lawley SHS and MLSHS Mount Lawley.
Mount Lawley Senior High School has an overall SchoolRank score of 72.1/100, rated "Excellent". 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 1103 (85th percentile; the national average is 1,000). Notably, student growth grades B+ (Good).
In 2025 NAPLAN testing at Mount Lawley Senior High School, 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.
Mount Lawley Senior High School is a large government secondary school with approximately 2,041 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.
Mount Lawley Senior High School is not a selective school as a whole, but it runs a test-entry GATE Languages program alongside its regular intake. Entry is through the Academic Selective Entrance Test (ASET) plus interview. The main entry point is Year 7. Applications go through the official state process, and entry cutoff marks are not published.
Mount Lawley Senior High School 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.
Mount Lawley Senior High School has a student-to-teacher ratio of 15.3:1. This is around the national average of approximately 14:1, meaning class sizes are typical for Australian schools. Support staff make up 26% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 90%, which is good.
Mount Lawley Senior High School's official WACE results: Achieved the WACE (2025), 98%. They cover 299 students in full-time, WACE-eligible Year 12.
Mount Lawley Senior High School is located in Mount Lawley, WA, in a major city. Its ICSEA is 1103 (85th 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.