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Largest Schools in CSDC de l'Est ontarien (2025)

Schools with the highest enrolment. Ranked by the Success Index (Canada) from official Canadian data; 39 schools in CSDC de l'Est ontarien, Ontario. Rank positions shown on each profile are within Canada and Ontario.

  1. 1
    49
    École élémentaire catholique Sainte-TrinitéRockland · Catholic ElementaryEnrolment: 730
  2. 2
    81
    École secondaire catholique L'EscaleRockland · Catholic SecondaryEnrolment: 645
  3. 3
    90
    École secondaire catholique de CasselmanCasselman · Catholic SecondaryEnrolment: 620
  4. 4
    73
    École élémentaire catholique Embrun - Pav. Saint-Jean/Pav. La CroiséeEmbrun · Catholic ElementaryEnrolment: 610
  5. 5
    59
    École élémentaire catholique de Casselman - Pav. St-Paul/Ste-EuphémieCasselman · Catholic ElementaryEnrolment: 490
  6. 6
    60
    École secondaire catholique La CitadelleCornwall · Catholic SecondaryEnrolment: 465
  7. 7
    90
    École secondaire catholique EmbrunEmbrun · Catholic SecondaryEnrolment: 440
  8. 8
    68
    École élémentaire catholique Saint-ViateurLimoges · Catholic ElementaryEnrolment: 390
  9. 9
    67
    École secondaire catholique régionale de HawkesburyHawkesbury · Catholic SecondaryEnrolment: 380
  10. 10
    47
    École élémentaire catholique Marie-TanguayCornwall · Catholic ElementaryEnrolment: 370
  11. 11
    87
    École intermédiaire catholique - Pavillon RocklandRockland · Catholic ElementaryEnrolment: 345
  12. 12
    48
    École élémentaire catholique Saint-Joseph (Russell)Russell · Catholic ElementaryEnrolment: 335
  13. 13
    70
    École secondaire catholique de PlantagenetPlantagenet · Catholic SecondaryEnrolment: 310
  14. 14
    74
    École élémentaire catholique Sainte-LucieLong Sault · Catholic ElementaryEnrolment: 305
  15. 15
    31
    École élémentaire catholique Notre-DameCornwall · Catholic ElementaryEnrolment: 305
  16. 16
    66
    École élémentaire catholique Saint-Joseph (Wendover)Wendover · Catholic ElementaryEnrolment: 290
  17. 17
    65
    École intermédiaire catholique - Pavillon CasselmanCasselman · Catholic ElementaryEnrolment: 285
  18. 18
    87
    École intermédiaire catholique - Pavillon EmbrunEmbrun · Catholic ElementaryEnrolment: 250
  19. 19
    86
    École élémentaire catholique Saint-Jean-BaptisteL'orignal · Catholic ElementaryEnrolment: 215
  20. 20
    55
    École élémentaire catholique Saint-VictorAlfred · Catholic ElementaryEnrolment: 215
  21. 21
    80
    École élémentaire catholique Sainte-FélicitéClarence Creek · Catholic ElementaryEnrolment: 205
  22. 22
    34
    École élémentaire catholique Paul VIHawkesbury · Catholic ElementaryEnrolment: 200
  23. 23
    41
    École élémentaire catholique Saint-MathieuHammond · Catholic ElementaryEnrolment: 195
  24. 24
    26
    École intermédiaire catholique La CitadelleCornwall · Catholic ElementaryEnrolment: 195
  25. 25
    76
    École intermédiaire catholique - Pavillon PlantagenetPlantagenet · Catholic ElementaryEnrolment: 185
  26. 26
    55
    École secondaire catholique Le RelaisAlexandria · Catholic SecondaryEnrolment: 175
  27. 27
    49
    École élémentaire catholique Saint-GrégoireVankleek Hill · Catholic ElementaryEnrolment: 175
  28. 28
    42
    École élémentaire catholique Saint-PaulPlantagenet · Catholic ElementaryEnrolment: 175
  29. 29
    30
    École élémentaire catholique Elda-RouleauAlexandria · Catholic ElementaryEnrolment: 175
  30. 30
    24
    École élémentaire catholique Notre-Dame-du-RosaireCrysler · Catholic ElementaryEnrolment: 175
  31. 31
    73
    École élémentaire catholique Saint-IsidoreSt-Isidore · Catholic ElementaryEnrolment: 170
  32. 32
    69
    École élémentaire catholique de l'Ange-GardienNorth Lancaster · Catholic ElementaryEnrolment: 170
  33. 33
    60
    École élémentaire catholique Sacré-CoeurBourget · Catholic ElementaryEnrolment: 165
  34. 34
    38
    École intermédiaire catholique - Pavillon HawkesburyHawkesbury · Catholic ElementaryEnrolment: 165
  35. 35
    51
    École élémentaire catholique La SourceMoose Creek · Catholic ElementaryEnrolment: 155
  36. 36
    92
    École élémentaire catholique Curé-LabrosseSt-Eugène · Catholic ElementaryEnrolment: 110
  37. 37
    40
    École élémentaire catholique Saint-AlbertSt-Albert · Catholic ElementaryEnrolment: 110
  38. 38
    73
    École élémentaire catholique Du RosaireSt-Pascal-Baylon · Catholic ElementaryEnrolment: 80
  39. 39
    27
    École intermédiaire catholique - Pavillon AlexandriaAlexandria · Catholic ElementaryEnrolment: 65

École élémentaire catholique Sainte-Trinité in Rockland leads the 2025 list of largest schools in CSDC de l'Est ontarien with Enrolment 730. Of the 39 schools shown, 39 are catholic.

For the full picture see the wider Ontario largest schools rankings, every school on the CSDC de l'Est ontarien page, or the comparison tool to put a shortlist side by side.

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Frequently asked questions

What is the best largest school in CSDC de l'Est ontarien?

École élémentaire catholique Sainte-Trinité in Rockland, Ontario ranks first among largest schools in CSDC de l'Est ontarien with Enrolment 730 (Enrolment: 730).

How are largest schools in CSDC de l'Est ontarien ranked?

Schools with the highest enrolment. Only schools eligible for the Success Index (Canada) are included; the index is shown alongside for context.

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.