Samuel Gilbert Public School vs William Clarke College
A head-to-head comparison of two schools in New South Wales, 1.5 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Samuel Gilbert Public School
Castle Hill · Government primary · K-6
643 students · ICSEA 1128
William Clarke College
Kellyville · Independent combined · K-12
1,951 students · ICSEA 1162
| Measure | Samuel Gilbert Public School Castle Hill NSW | William Clarke College Kellyville NSW |
|---|---|---|
| Success Index | 70 Top 25% | 78 Top 10% |
| State rank (type) | #309 of 1,619 | #52 of 314 |
| National rank (type) | #1025 of 4,908 | #141 of 1,259 |
| Sector | Government | Independent |
| Type | Primary | Combined |
| Year range | K-6 | K-12 |
| Students | 643 | 1,951 |
| Girls / boys | 306 / 337 | 990 / 961 |
| Foundation intake | 79 | 96 |
| Year 7 cohort | – | 207 |
| Year 12 cohort | – | 201 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | -14% | +19% |
| ICSEA Average 1000 | 1128 | 1162 |
| ICSEA percentile | 91th | 97th |
| Top SEA quarter | 51% | 65% |
| Bottom SEA quarter | 3% | 1% |
| Students per teacher | 18.4 | 12.5 |
| Teaching staff (FTE) | 35.0 | 156.4 |
| Non-teaching staff (FTE) | 4.1 | 84.4 |
| Language background other than English | 52% | 31% |
| Indigenous students | 2% | 0% |
| Suburb | Castle Hill 2154 | Kellyville 2155 |
| Council area | The Hills | The Hills |
| Remoteness | Major Cities | Major Cities |
| Website | samuelgilb-p.schools.nsw.gov.au | www.wcc.nsw.edu.au |
The verdict
- •William Clarke College scores higher on the Success Index (77.7 vs 69.9).
- •William Clarke College has the higher ICSEA (1162 vs 1128), indicating a more advantaged community.
- •William Clarke College has fewer students per teacher (12.5 vs 18.4).
- •William Clarke College is the larger school with 1,951 students compared with 643.
- •William Clarke College has grown faster over five years (19% vs -14%).
- •Samuel Gilbert Public School is a government school while William Clarke College is an independent school, so fees and enrolment rules differ.
The Success Index summarises community advantage, resourcing and momentum from ACARA data. It does not measure teaching quality, results or fit. Methodology.
Free academic assessment
Torn between two schools? Start with your child.
Whichever you choose, a free Success Tutoring assessment shows exactly where your child is in English and Maths and how to get ahead before the next school year.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Your nearest centre: Success Tutoring Baulkham Hills
Frequently asked questions
Is Samuel Gilbert Public School better than William Clarke College?
On the Success Index, William Clarke College ranks higher (77.7 vs 69.9 out of 100). The index measures community advantage and momentum from ACARA data, not teaching quality, so visit both schools before deciding.
How far apart are Samuel Gilbert Public School and William Clarke College?
About 1.5 km in a straight line, between Castle Hill and Kellyville in New South Wales.
Which has the better student-to-teacher ratio?
Samuel Gilbert Public School has 18.4 students per full-time-equivalent teacher and William Clarke College has 12.5.
How do Samuel Gilbert Public School and William Clarke College rank in NSW?
Samuel Gilbert Public School is 309th of 1,619 and William Clarke College is 52nd of 314 among primary schools in New South Wales on the 2025 Success Index.