How we measure schools, catchments and markets

Every school's EQAO composite is a single 0–100 figure built only from that school's published results, rounded to a whole percent. It reflects the 2024–2025 assessment.

Secondary schools: the average of the Grade 9 Math and OSSLT (literacy) pass rates. Both must be published — a school missing either shows no composite rather than an unfair single-test figure.

Elementary schools: the average of Reading, Writing and Math, where each subject is first averaged across the Grade 3 and Grade 6 results that are published, so all available data is used.

A school with no published EQAO shows no composite — never a zero — so it is never unfairly compared with schools that do publish.

Each school's composite is shown next to two like-for-like benchmarks. The city average is the mean of the composites of same-level schools in that city; the board average is the mean of the composites of same-level schools across that school board. Both compare elementary with elementary and secondary with secondary — never across levels.

The deltas (e.g. “+8 pts vs city avg”) are the whole-point difference between the rounded composites, so the figures always reconcile. These benchmarks are a comparison aid shown per test relative to the local average — not a ranking of school quality, and not a prediction of any student's outcome.

Catchment boundaries are derived from the school boards' own published attendance-area data (in Halton, the Halton District School Board and Halton Catholic District School Board), and verified against the boards' official school locators before publishing.

Homes are matched to a catchment by a point-in-polygon test — a listing's coordinates are checked against each school's boundary — refreshed at every MLS® sync, so the homes shown for a catchment stay current. Verified catchment boundaries are available today for the four Halton cities (Oakville, Burlington, Milton and Halton Hills), with coverage expanding. Boundaries and eligibility can change — always confirm with the school board before relying on them.

Active listings are sourced from MLS® through the TRREB / PropTx Internet Data Exchange (IDX) program and refresh about every 15 minutes. Counts, medians, days-on-market and property mix shown for a community or catchment are aggregated from those active listings.

These reflect list-price activity, not sold data. They are not an appraisal, an opinion of value, or a guarantee of market conditions, and they change as listings change. We never publish a computed price-per-square- foot or a fabricated “market score.”

We don't combine EQAO results into one overall ranking, we don't invent sold-price or valuation figures, and we don't present our market aggregates as advice. EQAO is one factor among many that families may consider, and school boundaries should always be confirmed directly with the board.

For the data sources behind these figures, see where our data comes from. For the full legal disclosures, see the disclaimer. To explore the data itself, browse schools, catchments and communities.