| Dates | School | Confirmed Cases |
|---|
| Collected | Reported | School Board | School | Municipality | Student | Staff | Unspecified | Total |
|---|
| 2021-04-07 | 2021-04-08 | York Catholic District School Board | St Joseph Catholic Elementary School | Aurora | 1 | 0 | 0 | 1 |
| 2021-04-06 | 2021-04-07 | York Catholic District School Board | St Joseph Catholic Elementary School | Aurora | 1 | 0 | 0 | 1 |
| 2021-04-01 | 2021-04-06 | York Catholic District School Board | St Joseph Catholic Elementary School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-31 | 2021-04-01 | York Catholic District School Board | St Joseph Catholic Elementary School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-30 | 2021-03-31 | York Catholic District School Board | St Joseph Catholic Elementary School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-29 | 2021-03-30 | York Catholic District School Board | St Joseph Catholic Elementary School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-26 | 2021-03-29 | York Catholic District School Board | St Joseph Catholic Elementary School | Aurora | 1 | 0 | 0 | 1 |
| 2021-03-25 | 2021-03-26 | York Catholic District School Board | St Joseph Catholic Elementary School | Aurora | 1 | 0 | 0 | 1 |
| 2021-12-22 | 2021-12-23 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 3 | 0 | 0 | 3 |
| 2021-12-21 | 2021-12-22 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 3 | 0 | 0 | 3 |
| 2021-12-20 | 2021-12-21 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 3 | 0 | 0 | 3 |
| 2021-12-17 | 2021-12-20 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 3 | 0 | 0 | 3 |
| 2021-12-16 | 2021-12-17 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 3 | 0 | 0 | 3 |
| 2021-12-15 | 2021-12-16 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 3 | 0 | 0 | 3 |
| 2021-12-14 | 2021-12-15 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 3 | 0 | 0 | 3 |
| 2021-12-13 | 2021-12-14 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 2 | 0 | 0 | 2 |
| 2021-02-25 | 2021-02-26 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 0 | 1 | 0 | 1 |
| 2021-02-24 | 2021-02-25 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 0 | 1 | 0 | 1 |
| 2021-02-23 | 2021-02-24 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 0 | 1 | 0 | 1 |
| 2021-02-22 | 2021-02-23 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 0 | 1 | 0 | 1 |
| 2021-02-19 | 2021-02-22 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 0 | 1 | 0 | 1 |
| 2021-02-18 | 2021-02-19 | Waterloo Catholic District School Board | St Joseph Catholic Elementary School | Cambridge | 0 | 1 | 0 | 1 |
| 2021-12-09 | 2021-12-10 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-12-08 | 2021-12-09 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-12-07 | 2021-12-08 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-12-06 | 2021-12-07 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-12-03 | 2021-12-06 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-12-02 | 2021-12-03 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-12-01 | 2021-12-02 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-11-30 | 2021-12-01 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-11-29 | 2021-11-30 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-11-26 | 2021-11-29 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 1 | 0 | 0 | 1 |
| 2021-11-16 | 2021-11-17 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-11-15 | 2021-11-16 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-11-12 | 2021-11-15 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-11-11 | 2021-11-12 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-11-10 | 2021-11-11 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-11-09 | 2021-11-10 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-11-08 | 2021-11-09 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-11-05 | 2021-11-08 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-11-04 | 2021-11-05 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-11-03 | 2021-11-04 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Fort Erie | 2 | 0 | 0 | 2 |
| 2021-03-10 | 2021-03-11 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-03-09 | 2021-03-10 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-03-08 | 2021-03-09 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-03-05 | 2021-03-08 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-03-04 | 2021-03-05 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-03-03 | 2021-03-04 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-03-02 | 2021-03-03 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-03-01 | 2021-03-02 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-02-26 | 2021-03-01 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-02-25 | 2021-02-26 | Niagara Catholic District School Board | St Joseph Catholic Elementary School | Grimsby | 1 | 0 | 0 | 1 |
| 2021-10-29 | 2021-11-01 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2021-10-28 | 2021-10-29 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2021-10-27 | 2021-10-28 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2021-10-26 | 2021-10-27 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2021-10-25 | 2021-10-26 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2021-10-22 | 2021-10-25 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2021-10-21 | 2021-10-22 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2021-10-20 | 2021-10-21 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2021-10-19 | 2021-10-20 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2021-10-18 | 2021-10-19 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2020-12-18 | 2020-12-21 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2020-12-17 | 2020-12-18 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2020-12-16 | 2020-12-17 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2020-12-15 | 2020-12-16 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2020-12-14 | 2020-12-15 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2020-12-11 | 2020-12-14 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2020-12-10 | 2020-12-11 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |
| 2020-12-09 | 2020-12-10 | York Catholic District School Board | St Joseph Catholic Elementary School | Markham | 1 | 0 | 0 | 1 |