William Clarke College
Updated Oct 2026 · ACARA 2025Kellyville, New South Wales 2155 · The Hills LGA
#52 of 314 combined schools in NSW
#141 of 1,259 nationally
About William Clarke College
William Clarke College is an independent combined (K–12) school located in Kellyville, New South Wales (2155), within the The Hills local government area. It caters for students from K to 12 and in 2025 enrolled 1,951 students (990 girls and 961 boys). The school is affiliated with Independent Schools NSW.
William Clarke College has an ICSEA value of 1162, indicating exceptionally high socio-educational advantage, among the most advantaged school communities in Australia. That places it in the 97th percentile of Australian schools. 65% of students come from the top socio-educational quarter and 1% from the bottom quarter.
The school employs 167 teachers (156.4 full-time equivalent) and 92 non-teaching staff, giving a student-to-teacher ratio of about 12.5 to 1. Enrolments have grown by 19% over the past five years.
On the Success Index, William Clarke College scores 77.7 out of 100, placing it in the top 10% of combined schools nationally and 52nd of 314 combined schools in NSW (2nd of 5 in the The Hills area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1162
- Students in the top advantage quarter (15%)65% of students
- Teacher resourcing (students per teacher) (15%)12.5 students per teacher
- Enrolment growth vs local area (5 years) (10%)+19% enrolments since 2020 (area median +30%)
- ICSEA trend (5 years) (10%)+43 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 William Clarke College's 1,951 students are spread across year levels in 2025.
Enrolment trend
How enrolments at William Clarke College have changed over the past decade.
Free academic assessment
Is your child on track at William Clarke College?
Rankings tell you about a school community. A free Success Tutoring assessment tells you about your child: exactly where they are in English and Maths, where the gaps are, and a plan to close them. Small-group, Australian-curriculum tutoring with no lock-in contracts.
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Schools near William Clarke College
Closest schools by straight-line distance, with their Success Index.
Sherwood Ridge Public School
Kellyville · Government primary · K-6
584 students · ICSEA 1114 · 602 m away
St Angela's Primary School
Castle Hill · Catholic primary · K-6
618 students · ICSEA 1126 · 695 m away
Kellyville High School
Kellyville · Government high school · 7-12
869 students · ICSEA 1086 · 708 m away
Samuel Gilbert Public School
Castle Hill · Government primary · K-6
643 students · ICSEA 1128 · 1.5 km away
Kellyville Public School
Kellyville · Government primary · K-6
855 students · ICSEA 1136 · 1.6 km away
Our Lady of The Rosary Primary School
Kellyville · Catholic primary · K-6
627 students · ICSEA 1116 · 2.0 km away
Australian International Academy, Kellyville Campus
North Kellyville · Independent combined · K-12
733 students · ICSEA 1122 · 2.0 km away
Tallowood School
Kellyville · Government special · U
98 students · ICSEA 1034 · 2.2 km away
Hills Adventist College
North Kellyville · Independent combined · K-12
823 students · ICSEA 1150 · 2.4 km away
Bella Vista Public School
Bella Vista · Government primary · K-6
1,104 students · ICSEA 1147 · 2.5 km away
Similar schools
Independent combined schools in NSW with a comparable ICSEA.
The Scots College
Bellevue Hill · Independent combined · K-12
2,076 students · ICSEA 1162
Masada College
St Ives · Independent combined · K-12
368 students · ICSEA 1162
The King's School
North Parramatta · Independent combined · K-12
2,150 students · ICSEA 1163
Wahroonga Adventist School
Wahroonga · Independent combined · K-12
633 students · ICSEA 1161
Kincoppal - Rose Bay School of the Sacred Heart
Rose Bay · Independent combined · K-12
851 students · ICSEA 1160
Loreto Normanhurst
Normanhurst · Independent combined · 5-12
1,240 students · ICSEA 1164
Frequently asked questions
Is William Clarke College a public or private school?
William Clarke College is a Independent school, which makes it a non-government (private) school affiliated with Independent Schools NSW.
What year levels does William Clarke College offer?
William Clarke College offers K to 12. It is classified by ACARA as a combined school.
How many students attend William Clarke College?
In 2025, William Clarke College had 1,951 enrolled students (990 girls, 961 boys), a change of 19% over five years.
What is the ICSEA of William Clarke College?
William Clarke College has an ICSEA (Index of Community Socio-Educational Advantage) of 1162. The national average is 1000, so this indicates exceptionally high socio-educational advantage, among the most advantaged school communities in Australia. ICSEA reflects the school community, not teaching quality.
How does William Clarke College rank in NSW?
William Clarke College ranks 52nd of 314 combined schools in New South Wales on the Success Index (77.7/100), and 141st of 1,259 nationally.
What is the student-to-teacher ratio at William Clarke College?
William Clarke College has about 12.5 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at William Clarke College?
In 2025, William Clarke College had 207 students in Year 7 and 201 in Year 12.
Is William Clarke College co-ed?
Yes. William Clarke College is a co-educational school enrolling both girls and boys.
What other schools are near William Clarke College?
There are 10 other schools within 15 km of William Clarke College 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 William Clarke College?
The closest Success Tutoring centre is Success Tutoring Baulkham Hills, about 4.8 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.