State school · Secondary

Mosman High School

Mosman, 2088 — in Mosman - South

SectorSchools

State

Secondary school

NSW school data

Year levels

—

official range

NSW school data

ICSEA

1126

national average is 1000

ACARA 2025

Suburb

Mosman - South

SA2 this campus sits in

ABS boundary

School information

Mosman High School is a state secondary school in Mosman - South, Sydney. It had 1,087 students, per NSW school data. Its state-school catchment covers Castle Cove - Northbridge, Mosman - South, Neutral Bay - Kirribilli, Mosman - North and Cremorne - Cammeray and parts of nearby suburbs. Its ICSEA is 1126, above the national average of 1000 (91st percentile nationally). NAPLAN results for Mosman High School are published on its My School profile (ACARA).

Student background

ACARA · 2025

ICSEA measures the socio-educational advantage of a school's intake against the national average of 1000. The quarters bar shows how its students spread across the four national bands; an average school sits at 25% in each.

1126ICSEA — 126 points above the national average of 1000, higher than 91% of Australian schools

+126

820national average · 10001180

vs avg

Socio-educational advantage

Bottom quarter 3%Lower-middle quarter 14%Upper-middle quarter 33%Top quarter 50%

14%33%50%

All Australian students — 25% in each quarter

Who’s enrolled

1,087students in 2025

Girls and boys

Girls 514 · 47%
Boys 573 · 53%

Language background

Language other than English 43%
English only 57%
Not stated 0%

Aboriginal or Torres Strait Islander

0% of enrolment

Mosman High School has an ICSEA of 1126, above the national average of 1000 and higher than 91% of Australian schools. 50% of its students are in the top quarter of socio-educational advantage and 3% in the bottom quarter, against 25% in each quarter across all Australian schools. It enrolled 1,087 students in 2025 (514 girls, 573 boys), 0% Aboriginal or Torres Strait Islander and 43% with a language background other than English.

Show the data table

Mosman High School — student background, ACARA School Profile 2025
Measure	Value
ICSEA	1126
ICSEA vs national average (1000)	+126
ICSEA percentile	91
Bottom quarter of advantage	3%
Lower-middle quarter of advantage	14%
Upper-middle quarter of advantage	33%
Top quarter of advantage	50%
Total enrolment	1,087
Girls	514 (47%)
Boys	573 (53%)
Language other than English	43%
English only	57%
Not stated	0%
Aboriginal or Torres Strait Islander	0%

NAPLAN results and student progress for Mosman High School are on My School, ACARA’s official site.

School details

Sector: State school
Type: Secondary
Enrolment: 1,087 students
ICSEA: 1126 · 91st percentile
Address: Mosman 2088

Catchment area

NSW government schools enrol students who live inside their catchment. This is a simplified outline — catchments can split a street, so confirm your exact address on the NSW Department of Education’s School Finder.

Map

Secondary (Years 7–12)

Covers Castle Cove - Northbridge, Cremorne - Cammeray, Mosman - North, Mosman - South, Neutral Bay - Kirribilli.

Also parts of Crows Nest - Waverton, North Sydney - Lavender Bay, St Leonards - Naremburn, Willoughby.

Mosman High School: common questions

Is Mosman High School a public or private school?

Mosman High School is a government (public) secondary school in Mosman - South, Sydney. NSW government schools enrol students who live inside their catchment area.

How many students go to Mosman High School?

Mosman High School had 1,087 students enrolled, per NSW school data.

What suburbs are in the Mosman High School catchment?

Mosman High School's enrolment catchment covers Castle Cove - Northbridge, Mosman - South, Neutral Bay - Kirribilli, Mosman - North and Cremorne - Cammeray, plus parts of nearby suburbs. Catchments can split a street, so confirm your address on the NSW Department of Education's School Finder.

What is Mosman High School's ICSEA?

Mosman High School has an ICSEA of 1126, above the national average of 1000 (91st percentile nationally), per the ACARA School Profile 2025. ICSEA reflects the socio-educational background of a school's students, not its results.

Where is Mosman High School located?

Mosman High School is at Mosman 2088, in the Mosman - South SA2.

Other schools in Mosman - South

Blessed Sacrament Catholic Primary SchoolNon-Government · Primary Mosman Church of England Preparatory SchoolNon-Government · Primary Mosman Public SchoolState · Primary Queenwood Junior SchoolNon-Government · Primary Sacred Heart Catholic Primary SchoolNon-Government · Primary

School list: NSW Government open data — ACARA Schools NSW, via the NSW data portal, CC BY 4.0. Catchments: NSW Department of Education “School intake zones” dataset, CC BY 4.0. ICSEA & student background: ACARA School Profile 2025. NAPLAN: myschool.edu.au (ACARA).