Thornlie Senior High School is a government secondary school with a distinctive Big Picture learning program, which emphasises engagement through student-led inquiry and real-world connection.
NAPLAN 30 points below national year-level averages and solid student growth; the result is a B- overall.
Thornlie Senior High School is a government secondary school with a distinctive Big Picture learning program, which emphasises engagement through student-led inquiry and real-world connection. The school runs as a Registered Training Organisation and offers specialist support for international students. Robotics is a genuine focus, with dedicated facilities in a STEM Building and active clubs and competitions. A Performing Arts Centre complements this, alongside enrichment programs in targeted areas. The community is tight-knit, making it suitable for families seeking a structured but personalised approach to secondary education.
Thornlie Senior High School is also known as TSHS, Thornlie SHS and TSHS Thornlie.
Thornlie Senior High School has an overall SchoolRank score of 47.6/100, rated "Average". This score is calculated from academic results, student growth, wellbeing, extracurricular programs, and value for money. Academically, the school scores 45/100, indicating developing performance relative to other Australian schools. The school's ICSEA (Index of Community Socio-Educational Advantage) is 969, slightly below the national average of 1,000. Notably, the school shows strong student growth over time (63/100), meaning students tend to improve well regardless of their starting point.
In 2025 NAPLAN testing at Thornlie Senior High School, Year 7 students averaged 500 across the tested NAPLAN domains, well below the national average of 540 for that year level, and Year 9 students averaged 548, below the national average of 569 for that year level. 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.
Thornlie Senior High School is a large government secondary school with approximately 1,125 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.
Thornlie 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 has a value score of 47/100 on SchoolRank, which compares educational outcomes relative to cost, government schools typically score well on this measure.
Thornlie Senior High School has a student-to-teacher ratio of 13.8:1. This is around the national average of approximately 14:1, meaning class sizes are typical for Australian schools. Support staff make up 29% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 81%, which is below the national benchmark.
The Year 12 completion rate is 85%.
Thornlie Senior High School is located in Thornlie, WA, classified as a major cities school. With an ICSEA of 969 (33th percentile), the school community's socio-educational advantage is below average, which means the school serves a community with greater socio-educational challenges. 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.