AustraliaNSWCollaroy PlateauSt Rose Catholic Primary School

St Rose Catholic Primary School

CatholicPrimaryK-6
Collaroy Plateau, NSW 2097 · Major Cities
Students227enrolled
Ratio1:17.2student:teacher
SEIFA9/10advantage decile
Community Profile
1149
ICSEA (+149 vs avg)
SEA Top ¼58%
SEA Bottom ¼1%
SEIFA Decile9/10
Indigenous0%
LBOTE26%
St Rose Catholic

Socio-Educational Advantage — ICSEA

ICSEA (Index of Community Socio-Educational Advantage) measures the socio-educational profile of this school's community — not the school itself. The national average is 1,000. It is calculated from parental occupation, parental education, geographic remoteness, and Indigenous enrolment proportion.

ICSEA Score1149
800 (most disadvantaged)Well above average1200 (most advantaged)
SEIFA IRSD Decile
9/10
least disadvantaged areas nationally
SEIFA IRSD Score
1089
Area-level index (ABS 2021)
ICSEA: ACARA (2025). SEIFA: ABS Census 2021.

Community Composition

With 58% of students from the top socio-educational quarter, St Rose Catholic Primary School draws from a markedly more advantaged community than the national average. This concentration at the top of the ICSEA distribution is reflected in its ICSEA score of 1149.

The chart below shows the proportion of students at St Rose Catholic Primary School from each socio-educational advantage quarter nationally. The white reference line marks 25% — the expected value if students were distributed evenly across quarters. Deviation from 25% in any quarter indicates a skewed community intake. The school draws predominantly from the top quarter.

Top quarter
+33pp above avg58%
National average: 25% in each quarter
Upper middle
+7pp above avg32%
National average: 25% in each quarter
Lower middle
-16pp below avg9%
National average: 25% in each quarter
Bottom quarter
-24pp below avg1%
National average: 25% in each quarter
Source: ACARA (2025). National average: 25% per quarter.

Why Community Composition Matters

ICSEA is not a quality ranking

ICSEA measures the community a school serves — not how well the school teaches. Two schools with identical ICSEA scores can have dramatically different teaching quality, culture, and outcomes. ICSEA is context, not verdict.

Always compare like with like

Comparing NAPLAN results between schools with different ICSEA scores is comparing communities, not schools. For meaningful comparison, look at schools within 30–40 points of each other on the ICSEA scale.

The composition shift over time

A school's community composition can shift significantly as a suburb gentrifies or a catchment area changes. A school that was below average in ICSEA a decade ago may now be serving a very different community — and vice versa.

SEIFA supplements ICSEA

SEIFA IRSD measures the geographic area around the school (from Census data). It provides a complementary view — especially useful for understanding schools in gentrifying or rapidly changing neighbourhoods where ICSEA may lag behind the on-the-ground reality.