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Largest Schools in Windsor-Essex CDSB (2025)

Schools with the highest enrolment. Ranked by the Success Index (Canada) from official Canadian data; 43 schools in Windsor-Essex CDSB, Ontario. Rank positions shown on each profile are within Canada and Ontario.

  1. 1
    85
    St Anne Secondary SchoolBelle River · Catholic SecondaryEnrolment: 1,335
  2. 2
    54
    St Joseph's High SchoolWindsor · Catholic SecondaryEnrolment: 1,325
  3. 3
    88
    St Thomas of Villanova Secondary SchoolLasalle · Catholic SecondaryEnrolment: 1,290
  4. 4
    60
    Holy Names Catholic High SchoolWindsor · Catholic SecondaryEnrolment: 1,165
  5. 5
    47
    Assumption College SchoolWindsor · Catholic SecondaryEnrolment: 905
  6. 6
    52
    St John Vianney Catholic SchoolWindsor · Catholic ElementaryEnrolment: 895
  7. 7
    32
    Catholic CentralWindsor · Catholic SecondaryEnrolment: 845
  8. 8
    83
    St Joseph Catholic SchoolRiver Canard · Catholic ElementaryEnrolment: 695
  9. 9
    88
    Holy Cross Catholic Elementary SchoolLasalle · Catholic ElementaryEnrolment: 675
  10. 10
    75
    St Pius X Catholic SchoolTecumseh · Catholic ElementaryEnrolment: 665
  11. 11
    77
    St William Catholic SchoolEmeryville · Catholic ElementaryEnrolment: 645
  12. 12
    59
    Cardinal Carter Catholic Secondary SchoolLeamington · Catholic SecondaryEnrolment: 630
  13. 13
    22
    F J Brennan Catholic High SchoolWindsor · Catholic SecondaryEnrolment: 625
  14. 14
    17
    St Louis Catholic SchoolLeamington · Catholic ElementaryEnrolment: 545
  15. 15
    45
    H J Lassaline Catholic SchoolWindsor · Catholic ElementaryEnrolment: 530
  16. 16
    56
    St Teresa of CalcuttaCatholic SchoolWindsor · Catholic ElementaryEnrolment: 505
  17. 17
    72
    St John de Brebeuf Catholic SchoolKingsville · Catholic ElementaryEnrolment: 495
  18. 18
    44
    L A Desmarais Catholic SchoolWindsor · Catholic ElementaryEnrolment: 495
  19. 19
    65
    St Gabriel Catholic SchoolWindsor · Catholic ElementaryEnrolment: 485
  20. 20
    60
    Notre Dame Catholic SchoolWindsor · Catholic ElementaryEnrolment: 480
  21. 21
    31
    St James Catholic SchoolWindsor · Catholic ElementaryEnrolment: 480
  22. 22
    80
    St. AndréTecumseh · Catholic ElementaryEnrolment: 465
  23. 23
    38
    St Angela Catholic SchoolWindsor · Catholic ElementaryEnrolment: 460
  24. 24
    77
    Our Lady of Mount Carmel Catholic SchoolWindsor · Catholic ElementaryEnrolment: 440
  25. 25
    39
    St Anne French Immersion Catholic SchoolWindsor · Catholic ElementaryEnrolment: 435
  26. 26
    51
    St John the Baptist Catholic SchoolBelle River · Catholic ElementaryEnrolment: 430
  27. 27
    51
    St Christopher Catholic SchoolWindsor · Catholic ElementaryEnrolment: 425
  28. 28
    83
    Stella Maris Catholic SchoolAmherstburg · Catholic ElementaryEnrolment: 415
  29. 29
    68
    Holy Name Catholic SchoolEssex · Catholic ElementaryEnrolment: 390
  30. 30
    46
    W J Langlois Catholic SchoolWindsor · Catholic ElementaryEnrolment: 385
  31. 31
    80
    Sacred Heart Catholic Elementary SchoolLasalle · Catholic ElementaryEnrolment: 365
  32. 32
    40
    Christ the King Separate SchoolWindsor · Catholic ElementaryEnrolment: 350
  33. 33
    80
    St Rose Catholic SchoolWindsor · Catholic ElementaryEnrolment: 345
  34. 34
    45
    Cardinal Carter Middle SchoolLeamington · Catholic ElementaryEnrolment: 320
  35. 35
    14
    Immaculate Conception Catholic SchoolWindsor · Catholic ElementaryEnrolment: 290
  36. 36
    35
    Our Lady of Perpetual Help Catholic SchoolWindsor · Catholic ElementaryEnrolment: 285
  37. 37
    78
    St Peter Catholic SchoolTecumseh · Catholic ElementaryEnrolment: 255
  38. 38
    8
    Assumption Middle SchoolWindsor · Catholic ElementaryEnrolment: 245
  39. 39
    38
    Corpus Christi Catholic Middle SchoolWindsor · Catholic ElementaryEnrolment: 240
  40. 40
    61
    St Anthony Catholic SchoolHarrow · Catholic ElementaryEnrolment: 210
  41. 41
    68
    St Mary Catholic SchoolMaidstone · Catholic ElementaryEnrolment: 170
  42. 42
    67
    St John the Evangelist Catholic SchoolWoodslee · Catholic ElementaryEnrolment: 120
  43. 43
    32
    Our Lady of the Annunciation Catholic SchoolStoney Point · Catholic ElementaryEnrolment: 110

St Anne Secondary School in Belle River leads the 2025 list of largest schools in Windsor-Essex CDSB with Enrolment 1,335. Of the 43 schools shown, 43 are catholic.

For the full picture see the wider Ontario largest schools rankings, every school on the Windsor-Essex CDSB 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 Windsor-Essex CDSB?

St Anne Secondary School in Belle River, Ontario ranks first among largest schools in Windsor-Essex CDSB with Enrolment 1,335 (Enrolment: 1,335).

How are largest schools in Windsor-Essex CDSB 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.