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Top 100 secondary schools in Ontario (2025)

Secondary (high) schools and combined schools. Ranked by the Success Index (Canada) from official Canadian data; 100 schools shown.

  1. 1
    96
    St Michael's Choir (Sr) SchoolToronto · Catholic Secondary100% OSSLT pass rate · 105 students
  2. 2
    96
    Ernest C Drury School for the DeafMilton · Public Secondary75 Enrolment · 75 students
  3. 3
    96
    W Ross Macdonald Provincial Secondary SchoolBrantford · Public Secondary80 Enrolment · 80 students
  4. 4
    94
    École secondaire catholique Paul-DesmaraisOttawa · Catholic Secondary99% OSSLT pass rate · 880 students
  5. 5
    94
    École secondaire publique L'Académie de la SeigneurieCasselman · Public Secondary98% OSSLT pass rate · 155 students
  6. 6
    93
    École secondaire catholique Sainte-Marie-RivierKingston · Catholic Secondary98% OSSLT pass rate · 165 students
  7. 7
    90
    École secondaire catholique de CasselmanCasselman · Catholic Secondary96% OSSLT pass rate · 620 students
  8. 8
    90
    West Carleton Secondary SchoolDunrobin · Public Secondary94% OSSLT pass rate · 1,290 students
  9. 9
    90
    École secondaire catholique EmbrunEmbrun · Catholic Secondary96% OSSLT pass rate · 440 students
  10. 10
    90
    École secondaire catholique Jeanne-LajoiePembroke · Catholic Secondary93% OSSLT pass rate · 220 students
  11. 11
    90
    École secondaire publique Maurice-LapointeKanata · Public Secondary94% OSSLT pass rate · 185 students
  12. 12
    89
    Corpus Christi Catholic Secondary SchoolBurlington · Catholic Secondary92% OSSLT pass rate · 1,140 students
  13. 13
    89
    Lawrence Park Collegiate InstituteToronto · Public Secondary96% OSSLT pass rate · 1,255 students
  14. 14
    88
    Tecumseh Vista Academy- SecondaryTecumseh · Public Secondary95% OSSLT pass rate · 740 students
  15. 15
    88
    École secondaire catholique Notre-DameWoodstock · Catholic Secondary90% OSSLT pass rate · 90 students
  16. 16
    88
    ÉSC RenaissanceAurora · Catholic Secondary98% OSSLT pass rate · 435 students
  17. 17
    88
    St Theresa of Lisieux Catholic High SchoolRichmond Hill · Catholic Secondary97% OSSLT pass rate · 1,590 students
  18. 18
    88
    St Thomas of Villanova Secondary SchoolLasalle · Catholic Secondary97% OSSLT pass rate · 1,290 students
  19. 19
    88
    All Saints Catholic High SchoolKanata · Catholic Secondary94% OSSLT pass rate · 1,035 students
  20. 20
    88
    ÉSC Sainte-TrinitéOakville · Catholic Secondary99% OSSLT pass rate · 365 students
  21. 21
    87
    Nelson High SchoolBurlington · Public Secondary91% OSSLT pass rate · 1,330 students
  22. 22
    87
    Malvern Collegiate InstituteToronto · Public Secondary96% OSSLT pass rate · 1,140 students
  23. 23
    87
    École secondaire catholique Pierre-SavardNepean · Catholic Secondary95% OSSLT pass rate · 900 students
  24. 24
    87
    École secondaire catholique GarneauOrléans · Catholic Secondary92% OSSLT pass rate · 870 students
  25. 25
    87
    Lo-Ellen Park Secondary SchoolSudbury · Public Secondary96% OSSLT pass rate · 885 students
  26. 26
    87
    École secondaire publique Mille-IlesKingston · Public Secondary96% OSSLT pass rate · 130 students
  27. 27
    87
    École secondaire Michelle-O'BonsawinToronto · Public Secondary100% OSSLT pass rate · 100 students
  28. 28
    86
    Lorne Park Secondary SchoolMississauga · Public Secondary96% OSSLT pass rate · 795 students
  29. 29
    86
    Stephen Lewis Secondary SchoolThornhill · Public Secondary92% OSSLT pass rate · 1,730 students
  30. 30
    86
    Colonel By Secondary SchoolGloucester · Public Secondary96% OSSLT pass rate · 1,140 students
  31. 31
    86
    École secondaire Toronto OuestToronto · Public Secondary100% OSSLT pass rate · 195 students
  32. 32
    86
    Garth Webb Secondary SchoolOakville · Public Secondary94% OSSLT pass rate · 1,655 students
  33. 33
    86
    École secondaire Gaétan GervaisOakville · Public Secondary98% OSSLT pass rate · 170 students
  34. 34
    86
    Donald A Wilson Secondary SchoolWhitby · Public Secondary94% OSSLT pass rate · 1,275 students
  35. 35
    86
    École secondaire catholique Mer BleueOrléans · Catholic Secondary96% OSSLT pass rate · 825 students
  36. 36
    86
    École secondaire publique Gisèle-LalondeOrléans · Public Secondary98% OSSLT pass rate · 840 students
  37. 37
    85
    White Oaks Secondary SchoolOakville · Public Secondary96% OSSLT pass rate · 2,180 students
  38. 38
    85
    Humberside Collegiate InstituteToronto · Public Secondary96% OSSLT pass rate · 1,460 students
  39. 39
    85
    Iroquois Ridge High SchoolOakville · Public Secondary94% OSSLT pass rate · 1,585 students
  40. 40
    85
    Bill Crothers Secondary SchoolUnionville · Public Secondary98% OSSLT pass rate · 1,575 students
  41. 41
    85
    École secondaire Norval-MorrisseauRichmond Hill · Public Secondary85 Enrolment · 85 students
  42. 42
    85
    Maplewood Secondary SchoolStittsville · Public Secondary245 Enrolment · 245 students
  43. 43
    85
    St Anne Secondary SchoolBelle River · Catholic Secondary97% OSSLT pass rate · 1,335 students
  44. 44
    84
    Dr G W Williams Secondary SchoolAurora · Public Secondary94% OSSLT pass rate · 1,515 students
  45. 45
    84
    Earl of March Secondary SchoolKanata · Public Secondary95% OSSLT pass rate · 1,715 students
  46. 46
    84
    Newmarket High SchoolNewmarket · Public Secondary97% OSSLT pass rate · 1,515 students
  47. 47
    84
    St Robert Catholic High SchoolThornhill · Catholic Secondary96% OSSLT pass rate · 1,705 students
  48. 48
    84
    Lockerby Composite SchoolSudbury · Public Secondary97% OSSLT pass rate · 535 students
  49. 49
    83
    École secondaire Ronald-MarionPickering · Public Secondary94% OSSLT pass rate · 230 students
  50. 50
    83
    Oakville Trafalgar High SchoolOakville · Public Secondary97% OSSLT pass rate · 1,225 students
  51. 51
    83
    Sandwich Secondary SchoolLasalle · Public Secondary94% OSSLT pass rate · 1,020 students
  52. 52
    83
    Nepean High SchoolOttawa · Public Secondary94% OSSLT pass rate · 1,270 students
  53. 53
    82
    Aldershot High SchoolBurlington · Public Secondary95% OSSLT pass rate · 720 students
  54. 54
    82
    E L Crossley Secondary SchoolFonthill · Public Secondary91% OSSLT pass rate · 890 students
  55. 55
    82
    École secondaire catholique Béatrice-DeslogesOrléans · Catholic Secondary93% OSSLT pass rate · 800 students
  56. 56
    82
    Bill Hogarth Secondary SchoolMarkham · Public Secondary97% OSSLT pass rate · 2,055 students
  57. 57
    82
    Bishop Allen Academy Catholic Secondary SchoolToronto · Catholic Secondary94% OSSLT pass rate · 1,460 students
  58. 58
    82
    Leaside High SchoolEast York · Public Secondary95% OSSLT pass rate · 1,115 students
  59. 59
    82
    John Fraser Secondary SchoolMississauga · Public Secondary95% OSSLT pass rate · 1,715 students
  60. 60
    82
    St Augustine Catholic High SchoolMarkham · Catholic Secondary96% OSSLT pass rate · 1,575 students
  61. 61
    82
    Centennial Collegiate and Vocational InstituteGuelph · Public Secondary93% OSSLT pass rate · 1,655 students
  62. 62
    82
    Sacred Heart High SchoolStittsville · Catholic Secondary95% OSSLT pass rate · 1,555 students
  63. 63
    81
    Richmond Hill High SchoolRichmond Hill · Public Secondary96% OSSLT pass rate · 1,635 students
  64. 64
    81
    Father John Redmond Catholic Secondary SchoolToronto · Catholic Secondary94% OSSLT pass rate · 1,160 students
  65. 65
    81
    Abbey Park High SchoolOakville · Public Secondary92% OSSLT pass rate · 1,290 students
  66. 66
    81
    Dr. Frank J. Hayden Secondary SchoolBurlington · Public Secondary95% OSSLT pass rate · 1,315 students
  67. 67
    81
    École secondaire catholique L'EscaleRockland · Catholic Secondary98% OSSLT pass rate · 645 students
  68. 68
    81
    Bayview Secondary SchoolRichmond Hill · Public Secondary95% OSSLT pass rate · 1,940 students
  69. 69
    81
    Bur Oak Secondary SchoolMarkham · Public Secondary96% OSSLT pass rate · 1,865 students
  70. 70
    81
    École secondaire catholique Ange-GabrielBrockville · Catholic Secondary96% OSSLT pass rate · 80 students
  71. 71
    80
    Aurora High SchoolAurora · Public Secondary93% OSSLT pass rate · 1,020 students
  72. 72
    80
    Hodan Nalayeh Secondary SchoolThornhill · Public Secondary91% OSSLT pass rate · 1,090 students
  73. 73
    80
    École secondaire publique Marc-GarneauTrenton · Public Secondary100% OSSLT pass rate · 85 students
  74. 74
    80
    Riverdale Collegiate InstituteToronto · Public Secondary95% OSSLT pass rate · 1,600 students
  75. 75
    80
    École secondaire Gabriel-DumontLondon · Public Secondary94% OSSLT pass rate · 300 students
  76. 76
    80
    St Michael High SchoolKemptville · Catholic Secondary97% OSSLT pass rate · 520 students
  77. 77
    80
    Merivale High SchoolNepean · Public Secondary96% OSSLT pass rate · 1,440 students
  78. 78
    80
    Ursula Franklin AcademyToronto · Public Secondary99% OSSLT pass rate · 475 students
  79. 79
    80
    Pierre Elliott Trudeau High SchoolMarkham · Public Secondary97% OSSLT pass rate · 1,865 students
  80. 80
    79
    ÉSC Saint-Frère-AndréToronto · Catholic Secondary96% OSSLT pass rate · 350 students
  81. 81
    79
    Canterbury High SchoolOttawa · Public Secondary94% OSSLT pass rate · 1,160 students
  82. 82
    79
    St. Kateri Tekakwitha Catholic Secondary Catholic SchoolMilton · Catholic Secondary89% OSSLT pass rate · 880 students
  83. 83
    79
    Thomas A Blakelock High SchoolOakville · Public Secondary90% OSSLT pass rate · 1,165 students
  84. 84
    79
    North Toronto Collegiate InstituteToronto · Public Secondary95% OSSLT pass rate · 1,220 students
  85. 85
    79
    Cardinal Carter Academy for the ArtsToronto · Catholic Secondary97% OSSLT pass rate · 665 students
  86. 86
    79
    Bishop Macdonell Catholic Secondary SchoolGuelph · Catholic Secondary92% OSSLT pass rate · 735 students
  87. 87
    79
    Glebe Collegiate InstituteOttawa · Public Secondary93% OSSLT pass rate · 1,315 students
  88. 88
    79
    Markville Secondary SchoolMarkham · Public Secondary96% OSSLT pass rate · 1,575 students
  89. 89
    79
    Richmond Green Secondary SchoolRichmond Hill · Public Secondary91% OSSLT pass rate · 1,160 students
  90. 90
    79
    York Mills Collegiate InstituteToronto · Public Secondary96% OSSLT pass rate · 1,295 students
  91. 91
    78
    ÉSC Père-René-de-GalinéeCambridge · Catholic Secondary94% OSSLT pass rate · 495 students
  92. 92
    78
    Earl Haig Secondary SchoolNorth York · Public Secondary95% OSSLT pass rate · 2,175 students
  93. 93
    78
    École secondaire catholique de La VérendryeThunder Bay · Catholic Secondary90% OSSLT pass rate · 135 students
  94. 94
    78
    École secondaire catholique HearstHearst · Catholic Secondary92% OSSLT pass rate · 230 students
  95. 95
    78
    ÉSC Saint-Charles-GarnierWhitby · Catholic Secondary98% OSSLT pass rate · 470 students
  96. 96
    78
    Blessed Trinity Catholic Secondary SchoolGrimsby · Catholic Secondary94% OSSLT pass rate · 1,085 students
  97. 97
    78
    Erin District High SchoolErin · Public Secondary97% OSSLT pass rate · 530 students
  98. 98
    77
    Milton District High SchoolMilton · Public Secondary92% OSSLT pass rate · 1,535 students
  99. 99
    77
    Brooklin High SchoolWhitby · Public Secondary91% OSSLT pass rate · 1,415 students
  100. 100
    77
    Markham District High SchoolMarkham · Public Secondary92% OSSLT pass rate · 1,415 students

St Michael's Choir (Sr) School in Toronto leads the 2025 list of secondary schools in Ontario with a Success Index (Canada) of 96.1. Of the 100 schools shown, 65 are public, 35 are catholic.

Scores are percentiles within school type, so a elementary school and a secondary school with the same score sit at the same point in their own distributions. Use the rankings to build a shortlist, then visit the schools and ask how they support students at your child's level.

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Frequently asked questions

What is the best secondary school in Ontario?

St Michael's Choir (Sr) School in Toronto ranks first among secondary schools in Ontario with a Success Index (Canada) of 96.1 out of 100 (Enrolment: 105).

How are secondary schools in Ontario ranked?

Each school's Success Index (Canada) combines 8 factors: eqao grade 3 (reading, writing, maths) (20%), eqao grade 6 (reading, writing, maths) (25%), eqao grade 9 mathematics (25%), osslt first-attempt pass rate (20%), fsa literacy score (25%), fsa numeracy score (25%), community advantage (fewer low-income households) (10%), parent education (fewer parents without a credential) (10%). Each factor is a percentile against schools of the same type across Canada. Schools with fewer than 60 students are excluded from rankings.

Are these 2025 rankings official?

No. They are computed by Success Tutoring from official Canadian data (Ontario – School information and student demographics; BC Data Catalogue – Foundation Skills Assessment). Provinces publish different assessments, so scores are comparable within a province, not between provinces.