SchoolRank AU

Hidden Gems: Australia's Best Schools You Can Actually Afford

We analysed 6,767 schools across all NAPLAN domains and found 781 hidden gems — schools delivering top-tier results in suburbs where the median house price is $640,000 lower, on average, than comparably performing schools elsewhere.

6,767 Schools Analysed 781 Hidden Gems ~$640K Typical Price Gap 8 States & Territories

Key Findings

  • 781 schools deliver above-median NAPLAN results in suburbs with below-median house prices within their state.
  • The correlation between house price and school performance is r = 0.564 — meaning about 68% of the variation in school results is unrelated to property prices.
  • Hidden gems sit in suburbs with a median house price of about $600,000, against roughly $1,240,000 for similarly performing schools — a gap of around $640,000. Suburb medians are a rough guide to a local market, not a like-for-like comparison of homes.
  • The states with the most hidden gems are NSW (236), VIC (172), QLD (167).

Frequently Asked Questions

What is a hidden gem school?

A hidden gem is a school whose NAPLAN performance significantly outperforms what its suburb's house prices would predict. A school qualifies when its Gem Score — the gap between its state NAPLAN percentile and its state house price percentile — is 30 or higher.

How is the Gem Score calculated?

The Gem Score equals the school's NAPLAN Index Percentile minus the suburb's House Price Percentile, both calculated within the same state. The NAPLAN index compares each school's results against other schools at the same year level and domain, so primary and secondary schools are measured fairly. A Gem Score of +30 or higher qualifies as a hidden gem.

How much can families save?

Hidden gems sit in suburbs with a median house price of about $600,000, against roughly $1,240,000 for non-gem schools with similar NAPLAN scores — a gap of around $640,000. That is an indication of a local market, not a saving you can bank on a particular home.

What data sources are used?

School performance data is based on NAPLAN results from the 2023–2025 releases, compared within each year level and domain. Suburb property data is the published median sale price for each school's suburb. The dataset covers 6,767 schools across all 8 states and territories.

Does a high Gem Score mean a school is good?

A high Gem Score means the school delivers strong NAPLAN results relative to its suburb's affordability — it's a measure of value, not an absolute quality ranking.