Best High Schools in Oakville: School Rankings
Oakville has some of the strongest high schools in Ontario. All 11 schools in the latest Fraser Institute report card rate 7.1 or higher out of 10, and four of them sit in the provincial top 12: Iroquois Ridge, Abbey Park and Gaétan-Gervais at 9.3, and Oakville Trafalgar at 9.2. The top Catholic school is St. Thomas Aquinas at 8.2.
Below is the full ranking of every Oakville high school in the report, a closer look at the schools parents ask me about most, and what you need to check before you buy a home for a specific school.
Last updated November 2026. Ratings come from the Fraser Institute’s Report Card on Ontario’s Secondary Schools 2025, which uses results from the 2023-24 school year and ranks 747 schools. I update this page each time a new report card comes out.
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Oakville high school rankings: all 11 schools
| # | School | Type | Rating (out of 10) | Ontario rank (of 747) |
|---|---|---|---|---|
| 1 | Iroquois Ridge High School | Public | 9.3 | 8 |
| 2 | Abbey Park High School | Public | 9.3 | 8 |
| 3 | École secondaire Gaétan-Gervais | French public | 9.3 | 8 |
| 4 | Oakville Trafalgar High School | Public | 9.2 | 12 |
| 5 | White Oaks Secondary School | Public | 8.8 | 29 |
| 6 | Garth Webb Secondary School | Public | 8.5 | 42 |
| 7 | École secondaire catholique Sainte-Trinité | French Catholic | 8.3 | 52 |
| 8 | St. Thomas Aquinas Catholic Secondary School | Catholic | 8.2 | 65 |
| 9 | St. Ignatius of Loyola Catholic Secondary School | Catholic | 8.1 | 79 |
| 10 | Thomas A. Blakelock High School | Public | 8.1 | 79 |
| 11 | Holy Trinity Catholic Secondary School | Catholic | 7.1 | 201 |
Schools with the same rating share the same Ontario rank. Source: Fraser Institute school rankings.
Top public high schools in Oakville
- Iroquois Ridge High School, 9.3
- Abbey Park High School, 9.3
- Oakville Trafalgar High School, 9.2
- White Oaks Secondary School, 8.8
- Garth Webb Secondary School, 8.5
Top Catholic high schools in Oakville
- St. Thomas Aquinas Catholic Secondary School, 8.2
- St. Ignatius of Loyola Catholic Secondary School, 8.1
- Holy Trinity Catholic Secondary School, 7.1
A closer look at the schools parents ask about most
Iroquois Ridge High School ranking
Iroquois Ridge is rated 9.3 and ranks 8th of 747 in Ontario. Its five-year average is 9.0, which makes it one of the most consistent public high schools in the province.
Abbey Park High School ranking
Abbey Park is rated 9.3 and ranks 8th in Ontario, with a five-year average of 8.8.
Oakville Trafalgar High School ranking
Oakville Trafalgar is rated 9.2 and ranks 12th in Ontario. Its five-year average of 9.1 is the highest in Oakville.
White Oaks Secondary School ranking
White Oaks is rated 8.8 and ranks 29th in Ontario, with a five-year average of 8.4. It offers the International Baccalaureate (IB) program.
Garth Webb Secondary School ranking
Garth Webb is rated 8.5 and ranks 42nd in Ontario, with a five-year average of 8.5.
Thomas A. Blakelock High School ranking
T.A. Blakelock is rated 8.1 and ranks 79th in Ontario, with a five-year average of 7.8.
St. Thomas Aquinas Catholic Secondary School ranking
St. Thomas Aquinas is rated 8.2 and ranks 65th in Ontario, the top Catholic high school in Oakville. Its five-year average is 7.6, so it has been improving.
St. Ignatius of Loyola Catholic Secondary School ranking
St. Ignatius of Loyola is rated 8.1 and ranks 79th in Ontario, with a five-year average of 8.1.
Holy Trinity Catholic Secondary School ranking
Holy Trinity is rated 7.1 and ranks 201st in Ontario, with a five-year average of 7.5.
École secondaire Gaétan-Gervais ranking
Gaétan-Gervais is rated 9.3 and ranks 8th in Ontario, with a five-year average of 8.4. It is a French-language school, so it suits families who qualify for and want French-language education.
How the rankings work
The Fraser Institute rates each school out of 10 using results from Ontario’s province-wide tests: the Grade 9 math test and the Grade 10 literacy test. A rating of 6 is roughly average for the province.
The rating measures test results only. It says nothing about arts, sports, clubs, special education support, school culture or how a particular teacher connects with your child. Treat it as one input, then visit the school and talk to parents who have kids there.
Buying a home for a specific school: what to check first
- The address decides the school. Each home is assigned to a home school by its boundary. Two houses on nearby streets can feed different high schools.
- Boundaries change. Boards redraw them as neighbourhoods grow. Confirm the school for the exact address with the Halton District School Board or the Halton Catholic District School Board before you make an offer.
- Special programs are by application. Programs such as IB, AP and regional arts usually take students through an application, not by address. Living nearby does not guarantee a spot, and programs and locations can change from year to year.
- Look at the trend. A school that has held its rating for five years is a safer bet than one good year.
Once you know which schools you want, I can set up a search for homes inside those boundaries. Start with detached homes, semi-detached homes, townhouses or condos in Oakville.
Frequently asked questions
What is the best high school in Oakville?
By the latest Fraser Institute rating, Iroquois Ridge High School, Abbey Park High School and École secondaire Gaétan-Gervais are tied at 9.3 out of 10, with Oakville Trafalgar High School right behind at 9.2.
What is the best public high school in Oakville?
Iroquois Ridge and Abbey Park are tied at 9.3, followed by Oakville Trafalgar at 9.2 and White Oaks at 8.8.
What is the best Catholic high school in Oakville?
St. Thomas Aquinas Catholic Secondary School at 8.2, followed by St. Ignatius of Loyola at 8.1.
Which Oakville high school has the IB program?
White Oaks Secondary School offers the International Baccalaureate program. Entry is by application.
Do I have to live in the boundary to attend a school?
For a regular program, generally yes: your address sets your home school. Application programs are the exception. Always confirm with the school board for your exact address.
How often do the rankings change?
The Fraser Institute publishes a new report card about once a year. Most schools move a little each year, so look at the five-year picture as well as the latest number.
Want help finding a home near one of these schools?
Tell me which schools are on your list and I will show you what is available in those boundaries and what homes there have been selling for. Call or text me at 647-249-9872, and we can meet by Video Conference or In-Person in My Office.