Best High Schools in Oakville, Ontario

13 schools ranked by EQAO Grade 9 Math and Grade 10 OSSLT · EQAO Performance Index

13 schools · ← All Ontario Secondary Schools

Local school searchCompare 13 Oakville high schools and secondary schools in one table.
City and Ontario rankUse local rank for nearby comparisons and Ontario rank for province-wide context.
Current leaderÉcole secondaire Gaétan Gervais is the top-ranked school on this page.
Ontario RankBoard RankCity RankSchoolBoardTypeOverall Score2023‑242022‑232021‑223‑Year ChangeWebsite
431École secondaire Gaétan GervaisCS ViamondePublic9.79.79.49.4+0.3 ↑Visit
1012Iroquois Ridge High SchoolHalton DSBPublic9.29.29.28.9+0.3 ↑Visit
1313ÉSC Sainte-TrinitéCS catholique MonAvenirCatholic9.09.09.08.4+0.6 ↑—
2124Abbey Park High SchoolHalton DSBPublic8.98.98.98.6+0.3 ↑Visit
2835Oakville Trafalgar High SchoolHalton DSBPublic8.98.99.28.90.0 →Visit
3646White Oaks Secondary SchoolHalton DSBPublic8.88.88.58.4+0.4 ↑Visit
5657Garth Webb Secondary SchoolHalton DSBPublic8.58.58.67.9+0.6 ↑Visit
9478Thomas A Blakelock High SchoolHalton DSBPublic8.28.27.88.0+0.2 ↑Visit
10039St. Ignatius of Loyola Catholic Secondary SchoolHalton CDSBCatholic8.18.18.18.2-0.1 ↓Visit
103410St. Thomas Aquinas Catholic Secondary SchoolHalton CDSBCatholic8.18.18.17.7+0.4 ↑Visit
245711Holy Trinity Catholic Secondary SchoolHalton CDSBCatholic7.37.37.87.5-0.2 ↓Visit
7751112Thomas Merton Catholic Secondary SchoolHalton CDSBCatholic—————Visit
7901213Thomas Merton Online Catholic SchoolHalton CDSBCatholic——————

Ranking Method

Oakville secondary schools are ranked with the School-Ranking.com EQAO Performance Index. The index uses official EQAO Grade 9 math and Grade 10 OSSLT results, shows the latest available score, and keeps recent-year scores and three-year change visible so readers can compare both performance and trend.

Frequently Asked Questions

What is the top-ranked secondary school in Oakville, Ontario?

École secondaire Gaétan Gervais is currently the top-ranked secondary school in Oakville on this page, based on the latest available EQAO Performance Index with an overall score of 9.7.

How are Oakville secondary schools ranked?

Oakville schools are ordered by Ontario rank and local city rank using official EQAO Grade 9 math and Grade 10 OSSLT results and the site EQAO Performance Index.

Can I compare public, Catholic, and French-language schools in Oakville?

Yes. The table includes the school board and school type where available, so local families can compare public, Catholic, French-language, and other public-system options together.

Does the city rank replace the Ontario rank?

No. City rank shows how a school compares locally, while Ontario rank shows its position across the full provincial dataset.