The Jannali High School
Updated Oct 2026 · ACARA 2025Jannali, New South Wales 2226 · Sutherland LGA
About The Jannali High School
The Jannali High School is a public high school located in Jannali, New South Wales (2226), within the Sutherland local government area. It caters for students from 7 to 12 and in 2025 enrolled 925 students (433 girls and 492 boys).
The Jannali High School has an ICSEA value of 1051, indicating above-average socio-educational advantage. That places it in the 69th percentile of Australian schools. 22% of students come from the top socio-educational quarter and 15% from the bottom quarter.
The school employs 68 teachers (65.6 full-time equivalent) and 20 non-teaching staff, giving a student-to-teacher ratio of about 14.1 to 1. Enrolments have fallen by 6% over the past five years.
On the Success Index, The Jannali High School scores 57.9 out of 100, placing it in the top 50% of secondary schools nationally and 222nd of 539 secondary schools in NSW (15th of 18 in the Sutherland area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1051
- Students in the top advantage quarter (15%)22% of students
- Teacher resourcing (students per teacher) (15%)14.1 students per teacher
- Enrolment growth vs local area (5 years) (10%)-6% enrolments since 2020 (area median -3%)
- ICSEA trend (5 years) (10%)+1 ICSEA points since 2020
The Success Index summarises the academic environment of a school community using official ACARA data. It is not a measure of teaching quality or student results. Read the methodology.
Student profile
Distribution of students across socio-educational advantage (SEA) quarters, plus community characteristics.
Enrolments by year level
How The Jannali High School's 925 students are spread across year levels in 2025.
Enrolment trend
How enrolments at The Jannali High School have changed over the past decade.
Free academic assessment
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Schools near The Jannali High School
Closest schools by straight-line distance, with their Success Index.
Jannali Public School
Jannali · Government primary · K-6
139 students · ICSEA 1062 · 276 m away
Bonnet Bay Public School
Bonnet Bay · Government primary · K-6
197 students · ICSEA 1090 · 650 m away
Jannali East Public School
Jannali · Government primary · K-6
313 students · ICSEA 1081 · 1.0 km away
St Joseph's Catholic Primary School Como - Oyster Bay
Como · Catholic primary · K-6
414 students · ICSEA 1127 · 1.2 km away
Como West Public School
Como · Government primary · K-6
275 students · ICSEA 1109 · 1.2 km away
Sutherland North Public School
Sutherland · Government primary · K-6
225 students · ICSEA 1073 · 1.3 km away
Como Public School
Como · Government primary · K-6
103 students · ICSEA 1071 · 1.7 km away
Kareela Public School
Kareela · Government primary · K-6
272 students · ICSEA 1102 · 1.8 km away
Oyster Bay Public School
Oyster Bay · Government primary · K-6
416 students · ICSEA 1098 · 1.9 km away
Sutherland Public School
Sutherland · Government primary · K-6
344 students · ICSEA 1101 · 1.9 km away
Similar schools
Government secondary schools in NSW with a comparable ICSEA.
Engadine High School
Engadine · Government high school · 7-12
1,063 students · ICSEA 1051
St Marys Senior High School
St Marys · Government high school · 11-12
926 students · ICSEA 1052
Port Hacking High School
Miranda · Government high school · 7-12
950 students · ICSEA 1050
Cronulla High School
Cronulla · Government high school · 7-12
1,205 students · ICSEA 1050
Marrickville High School
Marrickville · Government high school · 7-12
625 students · ICSEA 1052
Marsden High School
Meadowbank · Government high school · 6-12
1,298 students · ICSEA 1050
Frequently asked questions
Is The Jannali High School a public or private school?
The Jannali High School is a public (government) school run by the New South Wales education department.
What year levels does The Jannali High School offer?
The Jannali High School offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend The Jannali High School?
In 2025, The Jannali High School had 925 enrolled students (433 girls, 492 boys), a change of -6% over five years.
What is the ICSEA of The Jannali High School?
The Jannali High School has an ICSEA (Index of Community Socio-Educational Advantage) of 1051. The national average is 1000, so this indicates above-average socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does The Jannali High School rank in NSW?
The Jannali High School ranks 222nd of 539 secondary schools in New South Wales on the Success Index (57.9/100), and 562nd of 1,472 nationally.
What is the student-to-teacher ratio at The Jannali High School?
The Jannali High School has about 14.1 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at The Jannali High School?
In 2025, The Jannali High School had 122 students in Year 7 and 136 in Year 12.
Is The Jannali High School co-ed?
Yes. The Jannali High School is a co-educational school enrolling both girls and boys.
What other schools are near The Jannali High School?
There are 10 other schools within 15 km of The Jannali High School in our database. Scroll up to the "Nearby schools" section to compare them by Success Index, ICSEA and enrolments, or use the Compare tool.
Where can I get tutoring near The Jannali High School?
The closest Success Tutoring centre is Success Tutoring Hurstville, about 7.0 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.