State school · Secondary

Sefton High School

Sefton, 2162 — in Chester Hill - Sefton

SectorSchools

State

Secondary school

NSW school data

Year levels

—

official range

NSW school data

ICSEA

1033

national average is 1000

ACARA 2025

Suburb

Chester Hill - Sefton

SA2 this campus sits in

ABS boundary

School information

Sefton High School is a state secondary school in Chester Hill - Sefton, Sydney. It had 1,121 students, per NSW school data. It has a state-school enrolment catchment. Its ICSEA is 1033, above the national average of 1000 (61st percentile nationally). NAPLAN results for Sefton 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.

1033ICSEA — 33 points above the national average of 1000, higher than 61% of Australian schools

+33

820national average · 10001180

vs avg

Socio-educational advantage

Bottom quarter 29%Lower-middle quarter 25%Upper-middle quarter 25%Top quarter 21%

29%25%25%21%

All Australian students — 25% in each quarter

Who’s enrolled

1,121students in 2025

Girls and boys

Girls 541 · 48%
Boys 580 · 52%

Language background

Language other than English 94%
English only 6%
Not stated 0%

Aboriginal or Torres Strait Islander

0% of enrolment

Sefton High School has an ICSEA of 1033, above the national average of 1000 and higher than 61% of Australian schools. 21% of its students are in the top quarter of socio-educational advantage and 29% in the bottom quarter, against 25% in each quarter across all Australian schools. It enrolled 1,121 students in 2025 (541 girls, 580 boys), 0% Aboriginal or Torres Strait Islander and 94% with a language background other than English.

Show the data table

Sefton High School — student background, ACARA School Profile 2025
Measure	Value
ICSEA	1033
ICSEA vs national average (1000)	+33
ICSEA percentile	61
Bottom quarter of advantage	29%
Lower-middle quarter of advantage	25%
Upper-middle quarter of advantage	25%
Top quarter of advantage	21%
Total enrolment	1,121
Girls	541 (48%)
Boys	580 (52%)
Language other than English	94%
English only	6%
Not stated	0%
Aboriginal or Torres Strait Islander	0%

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

School details

Sector: State school
Type: Secondary
Enrolment: 1,121 students
ICSEA: 1033 · 61st percentile
Address: Sefton 2162

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)

Also parts of Auburn - South, Chester Hill - Sefton, Guildford - South Granville, Regents Park.

Sefton High School: common questions

Is Sefton High School a public or private school?

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

How many students go to Sefton High School?

Sefton High School had 1,121 students enrolled, per NSW school data.

What is Sefton High School's ICSEA?

Sefton High School has an ICSEA of 1033, above the national average of 1000 (61st percentile nationally), per the ACARA School Profile 2025. ICSEA reflects the socio-educational background of a school's students, not its results.

Where is Sefton High School located?

Sefton High School is at Sefton 2162, in the Chester Hill - Sefton SA2.

Other schools in Chester Hill - Sefton

Salamah CollegeNon-Government · Combined Chester Hill North Public SchoolState · Primary Chester Hill Public SchoolState · Primary Immaculate Heart of Mary Catholic Primary SchoolNon-Government · Primary Sefton Infants SchoolState · Primary Chester Hill High SchoolState · Secondary Rowland Hassall SchoolState · Special

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).