| Dates | School | Confirmed Cases |
|---|
| Collected | Reported | School Board | School | Municipality | Student | Staff | Unspecified | Total |
|---|
| 2021-11-17 | 2021-11-18 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 0 | 1 | 0 | 1 |
| 2021-11-16 | 2021-11-17 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 0 | 1 | 0 | 1 |
| 2021-11-15 | 2021-11-16 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 0 | 1 | 0 | 1 |
| 2021-11-12 | 2021-11-15 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 0 | 1 | 0 | 1 |
| 2021-11-11 | 2021-11-12 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 0 | 1 | 0 | 1 |
| 2021-11-10 | 2021-11-11 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 0 | 1 | 0 | 1 |
| 2021-11-09 | 2021-11-10 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 0 | 1 | 0 | 1 |
| 2021-11-08 | 2021-11-09 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 0 | 1 | 0 | 1 |
| 2021-11-05 | 2021-11-08 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 1 | 0 | 2 |
| 2021-11-04 | 2021-11-05 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 1 | 0 | 2 |
| 2021-11-03 | 2021-11-04 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-11-02 | 2021-11-03 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-11-01 | 2021-11-02 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-10-29 | 2021-11-01 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-10-19 | 2021-10-20 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-10-18 | 2021-10-19 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-10-15 | 2021-10-18 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 2 | 0 | 0 | 2 |
| 2021-10-14 | 2021-10-15 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 2 | 0 | 0 | 2 |
| 2021-10-13 | 2021-10-14 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 2 | 0 | 0 | 2 |
| 2021-10-12 | 2021-10-13 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 2 | 0 | 0 | 2 |
| 2021-10-08 | 2021-10-12 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 2 | 0 | 0 | 2 |
| 2021-10-07 | 2021-10-08 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 2 | 0 | 0 | 2 |
| 2021-10-06 | 2021-10-07 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 2 | 0 | 0 | 2 |
| 2021-10-05 | 2021-10-06 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-10-04 | 2021-10-05 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-04-08 | 2021-04-09 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-04-07 | 2021-04-08 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-04-06 | 2021-04-07 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-04-01 | 2021-04-06 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-03-31 | 2021-04-01 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-03-30 | 2021-03-31 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-03-29 | 2021-03-30 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |
| 2021-03-26 | 2021-03-29 | District School Board of Niagara | Stamford Collegiate | Niagara Falls | 1 | 0 | 0 | 1 |