Public vs Private Schools in NSW: Results, Fees, and Data

Of the roughly 800 high schools tracked by AU Guide's NSW School Rankings, only 50 earn a place in the top tier based on 2025 HSC results. The breakdown is striking: 29 are independent (private) schools, 17 are selective government schools, and just 2 are regular (non-selective) government schools. That means if you attend a standard public high school in NSW, the odds of landing in the top 50 are roughly 1 in 400. Meanwhile, selective schools — free to attend but entrance-exam gated — dominate the very top, with James Ruse Agricultural High School earning the highest AU Guide score of 97.75 out of 100.

These numbers prompt a question that thousands of NSW families grapple with every year: is the investment in private schooling worth it, and what do the results actually show? This article breaks down the four main school sectors in NSW — government, selective, independent, and Catholic — using real HSC data, and explores what the figures mean for your family's decision.

Overview

NSW operates one of the most diverse school systems in Australia, with four distinct sectors serving secondary students:

• Government (public) schools — free tuition, funded by the state and federal governments, open to all students in their catchment area.
• Selective government schools — also free, but admission is by competitive exam (the Selective High School Placement Test). There are approximately 50 fully or partially selective schools across NSW.
• Independent schools — privately governed, fee-paying institutions. Fees at leading independent schools typically range from $25,000 to $45,000+ per year, though this varies widely.
• Catholic systemic and independent schools — operated by Catholic dioceses or religious orders. Generally lower fees than independent schools, often ranging from $5,000 to $15,000 per year.

The HSC (Higher School Certificate) is the universal benchmark across all sectors. The metric we focus on is DA count — Distinguished Achievers, meaning results of 90 or above in individual HSC courses — and the DA ratio, which divides total DAs by the number of Year 12 students. A higher DA ratio indicates more top-band results per student, making it a fairer comparison than raw DA counts, which favour larger schools.

Background & Context

Why the public vs private debate matters in NSW

Roughly 65% of NSW secondary students attend government schools, about 20% attend Catholic schools, and 15% attend independent schools, according to ABS and ACARA data. Yet in AU Guide's top 50 ranking by total_score — which weights HSC outcomes, DA counts, DA ratios, and all-round achievers — independent schools hold 29 of the 50 spots (58%), while government selective schools hold 17 (34%). Non-selective government schools claim just 2 spots, with 1 Catholic school and 1 partially selective school rounding out the list.

This disparity fuels a perception that private schooling delivers better outcomes. But the picture is more nuanced. Selective schools, which charge no fees, consistently outperform even the most expensive private institutions at the very top. And the data reveals significant variation within each sector — not every private school outperforms every public one.

Understanding AU Guide's scoring

AU Guide's total_score (out of 100) is a composite measure based on 2025 HSC results. It factors in DA (Distinguished Achiever) counts, the DA ratio per student, and all-round achiever numbers. Schools are rated from 1 to 5 stars:

• 5 stars — Elite results (roughly top 2-3%)
• 4 stars — Excellent results
• 3 stars — Above average
• 2 stars — Average
• 1 star — Below average

How It Works: Comparing Sectors by the Numbers

The top 10 schools in NSW by AU Guide score

The top 10 is split evenly: 4 selective government schools and 6 independent schools. But note the DA ratios — James Ruse leads at 4.41 DAs per student, followed by North Sydney Boys at 4.39 and Sydney Grammar at 4.06. Selective schools consistently produce high DA ratios because their student intake is filtered by academic ability.

Sector-by-sector breakdown in the top 50

Independent schools dominate by volume (29 schools), but selective schools outperform on intensity: their average DA ratio among the top 50 is 2.66 compared to 2.09 for independent schools. This means that on a per-student basis, selective schools produce more Band 6 results.

What about non-selective public schools?

Only two non-selective government schools cracked the top 50: Cherrybrook Technology High School (score 88.93, DA ratio 1.13) and Cheltenham Girls High School (score 88.28, DA ratio 1.18). Both are 4-star schools with solid results, proving that excellent outcomes are possible at free, non-selective schools — but they are the exception, not the rule.

The partially selective Chatswood High School (score 86.60) also features, benefiting from a selective stream that boosts its overall numbers.

The selective school advantage: free and elite

Selective schools represent a unique category in this debate. They are government-funded and charge no tuition fees, yet they consistently deliver results that rival or exceed the most expensive independent schools. Six of the top 15 schools in NSW are selective. The catch, of course, is gaining entry: the Selective High School Placement Test is highly competitive, with acceptance rates at top schools often below 10%.

For families who secure a place, selective schools represent an extraordinary value proposition — world-class academic outcomes at zero tuition cost.

Independent schools: breadth and depth

The 29 independent schools in the top 50 span a wide range of scores, from Sydney Grammar at 97.11 down to schools scoring in the mid-80s. Notable patterns include:

• Girls' schools dominate: Among the top independent schools, girls-only institutions feature heavily — Abbotsleigh, Meriden, Pymble Ladies' College, PLC Sydney, Roseville College, Wenona, Ravenswood, and Ascham all rank in the top 50.
• Boys' schools hold their own: Sydney Grammar (97.11), Knox Grammar (92.99), St Aloysius' College (92.15), SHORE (90.97), and The King's School (90.56) all feature.
• Coeducational options: Barker College (92.95) and Al-Faisal College (91.10) show that coed independent schools can also achieve at the highest level.

Catholic schools: the middle ground

Only one Catholic school — Bethany College (score 86.51, DA ratio 1.06) — appears in the top 50. Catholic systemic schools generally have lower fees than independent schools and serve a broader demographic. While many Catholic schools deliver good outcomes across the full spectrum, they are underrepresented at the very top of HSC league tables. Families who value the Catholic school ethos, community, and more moderate fees may find excellent options that don't necessarily appear in the top 50 but still provide strong education.

Beyond the Numbers: What Data Doesn't Show

Fees and financial commitment

The most obvious difference between public and private schooling is cost. Government schools (including selective schools) charge no tuition fees, though families may pay for uniforms, excursions, and voluntary contributions. Independent school fees in NSW vary significantly — generally from around $15,000 per year at less expensive schools to $40,000+ at the most prestigious institutions. Catholic systemic schools typically charge between $5,000 and $15,000 per year.

Over a six-year secondary schooling journey (Years 7-12), the total fee difference between a government school and a top independent school can exceed $200,000. This is a significant consideration, especially for families weighing whether the academic outcomes justify the investment.

Student selection and intake

A critical factor often overlooked in raw results comparisons: independent and selective schools both filter their student intake, albeit differently. Selective schools use a standardised exam. Independent schools use interviews, reports, and sometimes testing — plus the fee barrier itself acts as a filter, correlating with family socioeconomic status, which is one of the strongest predictors of academic performance.

This means that comparing a selective or independent school's HSC results directly to a comprehensive government school is not a like-for-like comparison. The non-selective government school accepts all students in its catchment regardless of ability or background.

Extracurriculars, facilities, and networks

Independent schools often offer extensive extracurricular programs, modern facilities, smaller class sizes, and access to alumni networks. These are real benefits that don't show up in HSC data but may matter to families. Government schools, particularly well-resourced ones in affluent areas, can also offer excellent programs, but resources vary significantly between schools.

Values and school culture

Some families choose Catholic schools for religious education. Others choose single-sex independent schools because of the learning environment. Some families specifically want the diversity and social inclusion that comprehensive public schools offer. These are deeply personal decisions that no data table can resolve.

What This Means for Families

Based on the 2025 HSC data, here are specific, actionable takeaways for families navigating the public vs private decision in NSW:

1. If academic results are your top priority

Target selective schools first. They deliver results comparable to or better than the most expensive private schools, at no tuition cost. The top selective schools — James Ruse (97.75), Baulkham Hills (95.97), North Sydney Boys (94.87), North Sydney Girls (94.42) — all achieve 5-star ratings. The investment here is in preparation for the entrance exam, not ongoing fees.

2. If you can afford private fees

The data shows that top independent schools genuinely deliver strong academic results. Sydney Grammar (97.11), Abbotsleigh (95.31), and Meriden (95.25) are all in the top 5 across all sectors. But not all independent schools are created equal — check individual school data on AU Guide's NSW school rankings before committing to significant fees.

3. If you are in a strong public school catchment

Schools like Cherrybrook Technology HS (88.93) and Cheltenham Girls HS (88.28) prove that excellent results are achievable in the government system. If you live near a high-performing public school, investigate its results carefully — you may find it delivers strong outcomes without any tuition fees. Use AU Guide's Suburb Match tool to check which schools are near your potential suburbs.

4. Consider the DA ratio, not just the score

A school with 700 DAs sounds impressive, but if it has 300 Year 12 students, that's a ratio of 2.33. A smaller school with 280 DAs and 109 students has a ratio of 2.57 — actually performing better on a per-student basis. The DA ratio is a fairer indicator of how likely any individual student is to achieve top results.

5. Visit schools and talk to current families

Data tells you about outcomes but not about the day-to-day experience. Visit open days, talk to current parents, and consider factors like commute time, the school's approach to wellbeing, and how your child's learning style fits the school's culture. The "best" school on paper may not be the best school for your child.

6. Factor in total cost over six years

If considering independent schooling, calculate the total cost over Years 7-12 and consider whether that capital could be deployed differently — for example, living in a suburb with access to a strong public or selective school. Sometimes a strategic suburb choice achieves the same educational outcome at a fraction of the cost.

FAQ

Are private schools better than public schools in NSW?

It depends on how you define "better." In terms of raw HSC results, independent (private) schools hold 29 of the top 50 positions in AU Guide's 2025 rankings. However, selective government schools — which charge no fees — hold 17 of the top 50 spots and outperform on a per-student basis (average DA ratio of 2.66 vs 2.09 for independent schools). The answer depends on whether you're comparing against selective or non-selective public schools, and whether you weight factors beyond test scores.

What is the difference between selective and non-selective government schools?

Both are free government schools. Selective schools admit students based on the Selective High School Placement Test — a competitive entrance exam. Non-selective schools accept all students in their designated catchment area. In the 2025 HSC data, 17 selective schools appear in AU Guide's top 50, compared to just 2 non-selective government schools (Cherrybrook Technology HS and Cheltenham Girls HS). This gap largely reflects the academic filtering of selective school intake rather than a difference in teaching quality.

How much do private schools cost in NSW?

Fees vary widely. Catholic systemic schools generally range from approximately $5,000 to $15,000 per year. Independent schools range from around $15,000 to over $40,000 per year at the most expensive institutions. Over a six-year secondary education (Years 7-12), total fees at a top independent school can exceed $200,000. These are approximate figures — always check with individual schools for current fee schedules.

Is it worth paying for private school if my child can get into a selective school?

From a purely academic results perspective, the data suggests selective schools deliver comparable or superior outcomes to independent schools at no tuition cost. James Ruse (score 97.75) outperforms every independent school in NSW. However, independent schools may offer broader extracurricular programs, different pastoral care approaches, or a school culture that better suits your child. The decision is personal and depends on what you prioritise beyond academic results.

Which is the best non-selective public school in NSW?

Based on AU Guide's 2025 data, Cherrybrook Technology High School is the highest-ranked non-selective government school with a score of 88.93 and a 4-star rating. It produced 391 Distinguished Achiever results. Cheltenham Girls High School is the second highest at 88.28. Both demonstrate that strong outcomes are achievable in the non-selective government system.

Do all-girls schools outperform all-boys schools?

In the independent sector, girls' schools are well-represented at the top. Among the top 50, independent girls' schools include Abbotsleigh (95.31), Meriden (95.25), Pymble Ladies' College (95.02), PLC Sydney (94.20), and Roseville College (93.81). Independent boys' schools also perform strongly — Sydney Grammar leads at 97.11, with Knox Grammar at 92.99 and St Aloysius' at 92.15. In the selective sector, North Sydney Boys (94.87) and North Sydney Girls (94.42) are closely matched. The data does not conclusively show one gender outperforming the other overall.

What does DA ratio mean and why does it matter?

DA stands for Distinguished Achiever — a Band 6 result (90+ marks) in an individual HSC course. The DA ratio divides a school's total DA count by its Year 12 cohort size. For example, James Ruse with 705 DAs and about 160 students has a DA ratio of 4.41, meaning each student averages over 4 Band 6 results. A larger school might have more DAs in total but a lower ratio per student. The DA ratio is a more meaningful indicator of how well a school performs per student, regardless of school size.

References

• AU Guide NSW School Rankings 2025
• NESA — NSW Education Standards Authority
• ABS — Australian Bureau of Statistics
• ACARA — My School