ET Australia Secondary College — Trends (2008–2025) — Gosford, NSW

13-Year Profile (2013–2025)

Historical profile data for ET Australia Secondary College from 2013 to 2025. ICSEA has risen by 10 points over this period. Total enrolment has grown by 219 students.

ICSEA 2013966

ICSEA 2025976+10

Enrolment 201361

Enrolment 2025280+219

Key Metrics Over Time

Total Enrolments

280

↑

2013–2025+219 (359.0%)

ICSEA Score

976

↑

2016–2025+10 (1.0%)

ICSEA Percentile

36th

↑

2016–2025+6th (20.0%)

Student:Teacher Ratio

9.5:1

↓

2013–2025-5.7:1 (-37.5%)

Indigenous Students

13.0%

↓

2013–2025-3.0% (-18.8%)

LBOTE Students

7.0%

↑

2013–2025+7.0% (Infinity%)

Source: ACARA School Profile 2008–2025

Community Composition Shift

How the school's socio-educational advantage distribution has shifted over time. Each bar shows the % of students in each SEA quarter.

2013

No data

2019

Bottom31%

Lower36%

Upper24%

Top9%

2025

Bottom40%

Lower32%

Upper21%

Top7%

Top Quarter trend (2013–2025)

↓

Source: ACARA School Profile 2008–2025

Year-by-Year Data

YearEnrolmentsICSEAST RatioIndigenousLBOTE

20252809769.5:113%7%

202428095410.4:114%3%

202326396610:116%3%

20222489809.2:116%0%

20212179838.6:113%0%

20201729768.5:113%0%

20191649769.5:110%0%

20181469559.7:110%1%

2017107—10.3:113%1%

201610096611.9:115%0%

201565—10.7:114%16%

201465—14.1:115%13%

201361—15.2:116%0%

Source: ACARA School Profile 2008–2025