| Dates | School | Confirmed Cases |
|---|
| Collected | Reported | School Board | School | Municipality | Student | Staff | Unspecified | Total |
|---|
| 2021-03-23 | 2021-03-24 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-22 | 2021-03-23 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-19 | 2021-03-22 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-18 | 2021-03-19 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-17 | 2021-03-18 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-16 | 2021-03-17 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-15 | 2021-03-16 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-12 | 2021-03-15 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-11 | 2021-03-12 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-10 | 2021-03-11 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2020-12-08 | 2020-12-09 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2020-12-07 | 2020-12-08 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2020-12-04 | 2020-12-07 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2020-12-03 | 2020-12-04 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2020-12-02 | 2020-12-03 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2020-12-01 | 2020-12-02 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2020-11-30 | 2020-12-01 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 1 | 0 | 0 | 1 |
| 2020-11-03 | 2020-11-04 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-11-02 | 2020-11-03 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-30 | 2020-11-02 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-29 | 2020-10-30 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-28 | 2020-10-29 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-27 | 2020-10-28 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-26 | 2020-10-27 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-23 | 2020-10-26 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 2 | 2 |
| 2020-10-22 | 2020-10-23 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 2 | 2 |
| 2020-10-21 | 2020-10-22 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 2 | 2 |
| 2020-10-20 | 2020-10-21 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-19 | 2020-10-20 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-16 | 2020-10-19 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-15 | 2020-10-16 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-14 | 2020-10-15 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-13 | 2020-10-14 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |
| 2020-10-09 | 2020-10-13 | York Catholic District School Board | St. Maximilian Kolbe Catholic High School | Aurora | 0 | 0 | 1 | 1 |