Mullumbimby High School
Updated Oct 2026 · ACARA 2025Mullumbimby, New South Wales 2482 · Byron LGA
About Mullumbimby High School
Mullumbimby High School is a public high school located in Mullumbimby, New South Wales (2482), within the Byron local government area. It caters for students from 7 to 12 and in 2025 enrolled 623 students (282 girls and 341 boys).
Mullumbimby High School has an ICSEA value of 1019, indicating a socio-educational profile close to the national average of 1000. That places it in the 55th percentile of Australian schools. 16% of students come from the top socio-educational quarter and 24% from the bottom quarter.
The school employs 58 teachers (56.5 full-time equivalent) and 21 non-teaching staff, giving a student-to-teacher ratio of about 11.0 to 1. Enrolments have remained steady over the past five years.
On the Success Index, Mullumbimby High School scores 57.5 out of 100, placing it in the top 50% of secondary schools nationally and 223rd of 539 secondary schools in NSW (2nd of 2 in the Byron area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1019
- Students in the top advantage quarter (15%)16% of students
- Teacher resourcing (students per teacher) (15%)11.0 students per teacher
- Enrolment growth vs local area (5 years) (10%)-2% enrolments since 2020
- ICSEA trend (5 years) (10%)-2 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 Mullumbimby High School's 623 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Mullumbimby High School have changed over the past decade.
Free academic assessment
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Schools near Mullumbimby High School
Closest schools by straight-line distance, with their Success Index.
St John's Primary School
Mullumbimby · Catholic primary · K-6
63 students · ICSEA 1038 · 1.0 km away
Mullumbimby Public School
Mullumbimby · Government primary · K-6
217 students · ICSEA 1026 · 1.3 km away
Hinterland Christian College
Mullumbimby · Independent combined · K-10
71 students · ICSEA 1048 · 2.1 km away
Shearwater, the Mullumbimby Steiner School
Mullumbimby · Independent combined · K-12
587 students · ICSEA 1070 · 3.4 km away
Brunswick Heads Public School
Brunswick Heads · Government primary · K-6
222 students · ICSEA 1025 · 5.8 km away
The Pocket Public School
The Pocket · Government primary · K-6
111 students · ICSEA 1068 · 6.1 km away
Wilsons Creek Public School
Mullumbimby · Government primary · K-6
23 students · ICSEA 1041 · 6.9 km away
Coorabell Public School
Coorabell · Government primary · K-6
92 students · ICSEA 1066 · 7.5 km away
Goonengerry Public School
Goonengerry · Government primary · K-6
57 students · ICSEA 1048 · 7.8 km away
Ocean Shores Public School
Ocean Shores · Government primary · K-6
294 students · ICSEA 1051 · 8.7 km away
Similar schools
Government secondary schools in NSW with a comparable ICSEA.
Canterbury Boys High School
Canterbury · Government high school · 7-12
422 students · ICSEA 1018
Picnic Point High School
Picnic Point · Government high school · 7-12
865 students · ICSEA 1018
Georges River College Hurstville Campus
Hurstville · Government high school · 7-10
267 students · ICSEA 1017
Georges River College Oatley Senior Campus
Oatley · Government high school · 11-12
741 students · ICSEA 1022
James Cook Boys High School
Kogarah · Government high school · 7-12
473 students · ICSEA 1022
Moorebank High School
Moorebank · Government high school · 7-12
992 students · ICSEA 1022
Frequently asked questions
Is Mullumbimby High School a public or private school?
Mullumbimby High School is a public (government) school run by the New South Wales education department.
What year levels does Mullumbimby High School offer?
Mullumbimby High School offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Mullumbimby High School?
In 2025, Mullumbimby High School had 623 enrolled students (282 girls, 341 boys), a change of -2% over five years.
What is the ICSEA of Mullumbimby High School?
Mullumbimby High School has an ICSEA (Index of Community Socio-Educational Advantage) of 1019. The national average is 1000, so this indicates a socio-educational profile close to the national average of 1000. ICSEA reflects the school community, not teaching quality.
How does Mullumbimby High School rank in NSW?
Mullumbimby High School ranks 223rd of 539 secondary schools in New South Wales on the Success Index (57.5/100), and 569th of 1,472 nationally.
What is the student-to-teacher ratio at Mullumbimby High School?
Mullumbimby High School has about 11.0 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Mullumbimby High School?
In 2025, Mullumbimby High School had 133 students in Year 7 and 67 in Year 12.
Is Mullumbimby High School co-ed?
Yes. Mullumbimby High School is a co-educational school enrolling both girls and boys.
What other schools are near Mullumbimby High School?
There are 10 other schools within 15 km of Mullumbimby 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 Mullumbimby High School?
The closest Success Tutoring centre is Success Tutoring Mount Gravatt East, about 121 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.