Katoomba High School
Updated Oct 2026 · ACARA 2025Katoomba, New South Wales 2780 · Blue Mountains LGA
About Katoomba High School
Katoomba High School is a public high school located in Katoomba, New South Wales (2780), within the Blue Mountains local government area. It caters for students from 7 to 12 and in 2025 enrolled 862 students (418 girls and 444 boys).
Katoomba High School has an ICSEA value of 1034, indicating a socio-educational profile close to the national average of 1000. That places it in the 61st percentile of Australian schools. 23% of students come from the top socio-educational quarter and 22% from the bottom quarter.
The school employs 73 teachers (79.0 full-time equivalent) and 24 non-teaching staff, giving a student-to-teacher ratio of about 10.9 to 1. Enrolments have fallen by 4% over the past five years.
On the Success Index, Katoomba High School scores 67.1 out of 100, placing it in the top 25% of secondary schools nationally and 144th of 539 secondary schools in NSW (2nd of 5 in the Blue Mountains area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1034
- Students in the top advantage quarter (15%)23% of students
- Teacher resourcing (students per teacher) (15%)10.9 students per teacher
- Enrolment growth vs local area (5 years) (10%)-4% enrolments since 2020 (area median -4%)
- ICSEA trend (5 years) (10%)+10 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 Katoomba High School's 862 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Katoomba High School have changed over the past decade.
Free academic assessment
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Schools near Katoomba High School
Closest schools by straight-line distance, with their Success Index.
Katoomba Public School
Katoomba · Government primary · K-6
210 students · ICSEA 1035 · 976 m away
St Canice's Primary School
Katoomba · Catholic primary · K-6
67 students · ICSEA 1020 · 1.3 km away
Leura Public School
Leura · Government primary · K-6
199 students · ICSEA 1055 · 2.7 km away
Katoomba North Public School
Katoomba · Government primary · K-6
128 students · ICSEA 986 · 3.1 km away
Blue Mountains Grammar School
Wentworth Falls · Independent combined · K-12
512 students · ICSEA 1140 · 5.6 km away
Wentworth Falls Public School
Wentworth Falls · Government primary · K-6
370 students · ICSEA 1074 · 5.7 km away
Kindlehill School
Wentworth Falls · Independent combined · K-12
114 students · ICSEA 1077 · 6.2 km away
Megalong Public School
Megalong Valley · Government primary · K-6
3 students · ICSEA 1046 · 7.7 km away
Blackheath Public School
Blackheath · Government primary · K-6
254 students · ICSEA 1050 · 10 km away
Lawson Public School
Lawson · Government primary · K-6
196 students · ICSEA 1000 · 11 km away
Similar schools
Government secondary schools in NSW with a comparable ICSEA.
Sefton High School
Sefton · Government high school · 7-12
1,121 students · ICSEA 1033
Sydney Distance Education High School
Woolloomooloo · Government high school · 7-12
615 students · ICSEA 1032
Kiama High School
Kiama · Government high school · 7-12
761 students · ICSEA 1036
Central Sydney Intensive English High School
Alexandria · Government high school · 7-11
142 students · ICSEA 1037
South Sydney High School
Maroubra · Government high school · 7-12
796 students · ICSEA 1037
East Hills Girls Technology High School
Panania · Government high school · 7-12
759 students · ICSEA 1031
Frequently asked questions
Is Katoomba High School a public or private school?
Katoomba High School is a public (government) school run by the New South Wales education department.
What year levels does Katoomba High School offer?
Katoomba High School offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Katoomba High School?
In 2025, Katoomba High School had 862 enrolled students (418 girls, 444 boys), a change of -4% over five years.
What is the ICSEA of Katoomba High School?
Katoomba High School has an ICSEA (Index of Community Socio-Educational Advantage) of 1034. 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 Katoomba High School rank in NSW?
Katoomba High School ranks 144th of 539 secondary schools in New South Wales on the Success Index (67.1/100), and 354th of 1,472 nationally.
What is the student-to-teacher ratio at Katoomba High School?
Katoomba High School has about 10.9 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Katoomba High School?
In 2025, Katoomba High School had 149 students in Year 7 and 114 in Year 12.
Is Katoomba High School co-ed?
Yes. Katoomba High School is a co-educational school enrolling both girls and boys.
What other schools are near Katoomba High School?
There are 10 other schools within 15 km of Katoomba 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 Katoomba High School?
The closest Success Tutoring centre is Success Tutoring Penrith, about 36 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.