Lake Illawarra High School
Updated Oct 2026 · ACARA 2025Lake Illawarra, New South Wales 2528 · Shellharbour LGA
#480 of 539 high schools in NSW
#1317 of 1,472 nationally
About Lake Illawarra High School
Lake Illawarra High School is a public high school located in Lake Illawarra, New South Wales (2528), within the Shellharbour local government area. It caters for students from 7 to 12 and in 2025 enrolled 542 students (260 girls and 282 boys).
Lake Illawarra High School has an ICSEA value of 894, indicating a community facing significant socio-educational disadvantage. That places it in the 10th percentile of Australian schools. 2% of students come from the top socio-educational quarter and 67% from the bottom quarter.
The school employs 53 teachers (53.6 full-time equivalent) and 25 non-teaching staff, giving a student-to-teacher ratio of about 10.1 to 1. Enrolments have remained steady over the past five years.
On the Success Index, Lake Illawarra High School scores 24.8 out of 100, placing it in the lower 50% of secondary schools nationally and 480th of 539 secondary schools in NSW (6th of 6 in the Shellharbour area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 894
- Students in the top advantage quarter (15%)2% of students
- Teacher resourcing (students per teacher) (15%)10.1 students per teacher
- Enrolment growth vs local area (5 years) (10%)+2% enrolments since 2020 (area median +1%)
- ICSEA trend (5 years) (10%)-9 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 Lake Illawarra High School's 542 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Lake Illawarra High School have changed over the past decade.
Free academic assessment
Is your child on track at Lake Illawarra High School?
Rankings tell you about a school community. A free Success Tutoring assessment tells you about your child: exactly where they are in English and Maths, where the gaps are, and a plan to close them. Small-group, Australian-curriculum tutoring with no lock-in contracts.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Your nearest centre: Success Tutoring Campbelltown
Schools near Lake Illawarra High School
Closest schools by straight-line distance, with their Success Index.
Warilla North Public School
Warilla · Government primary · K-6
167 students · ICSEA 872 · 577 m away
Lake Illawarra South Public School
Lake Illawarra · Government primary · K-6
177 students · ICSEA 954 · 852 m away
Mount Warrigal Public School
Warilla · Government primary · P-6
185 students · ICSEA 885 · 1.4 km away
Peterborough School
Warilla · Government special · U
115 students · ICSEA 938 · 1.6 km away
Warilla Public School
Warilla · Government primary · K-6
279 students · ICSEA 937 · 1.7 km away
Windang Public School
Windang · Government primary · K-6
203 students · ICSEA 988 · 1.8 km away
Barrack Heights Public School
Barrack Heights · Government primary · K-6
192 students · ICSEA 873 · 2.0 km away
Oak Flats High School
Oak Flats · Government high school · 7-12
648 students · ICSEA 932 · 2.5 km away
Balarang Public School
Oak Flats · Government primary · K-6
268 students · ICSEA 974 · 2.7 km away
Warilla High School
Barrack Heights · Government high school · 7-12
1,020 students · ICSEA 968 · 2.7 km away
Similar schools
Government secondary schools in NSW with a comparable ICSEA.
Chifley College Senior Campus
Mount Druitt · Government high school · 11-12
499 students · ICSEA 894
Kurri Kurri High School
Kurri Kurri · Government high school · 7-12
917 students · ICSEA 894
Scone High School
Scone · Government high school · 7-12
316 students · ICSEA 894
Wauchope High School
Wauchope · Government high school · 7-12
458 students · ICSEA 894
Parkes High School
Parkes · Government high school · 7-12
467 students · ICSEA 894
Cessnock High School
Cessnock · Government high school · 7-12
616 students · ICSEA 892
Frequently asked questions
Is Lake Illawarra High School a public or private school?
Lake Illawarra High School is a public (government) school run by the New South Wales education department.
What year levels does Lake Illawarra High School offer?
Lake Illawarra High School offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Lake Illawarra High School?
In 2025, Lake Illawarra High School had 542 enrolled students (260 girls, 282 boys), a change of 2% over five years.
What is the ICSEA of Lake Illawarra High School?
Lake Illawarra High School has an ICSEA (Index of Community Socio-Educational Advantage) of 894. The national average is 1000, so this indicates a community facing significant socio-educational disadvantage. ICSEA reflects the school community, not teaching quality.
How does Lake Illawarra High School rank in NSW?
Lake Illawarra High School ranks 480th of 539 secondary schools in New South Wales on the Success Index (24.8/100), and 1317th of 1,472 nationally.
What is the student-to-teacher ratio at Lake Illawarra High School?
Lake Illawarra High School has about 10.1 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Lake Illawarra High School?
In 2025, Lake Illawarra High School had 87 students in Year 7 and 53 in Year 12.
Is Lake Illawarra High School co-ed?
Yes. Lake Illawarra High School is a co-educational school enrolling both girls and boys.
What other schools are near Lake Illawarra High School?
There are 10 other schools within 15 km of Lake Illawarra 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 Lake Illawarra High School?
The closest Success Tutoring centre is Success Tutoring Campbelltown, about 52 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.