St. Theresa's High School is a high school in Midland, Ontario, Canada administered by the Simcoe Muskoka Catholic District School Board. The school serves students from Midland, Penetanguishene, Tay Township, Tiny Township and a portion of Springwater Township (Elmvale). The current enrollment is 700 students from grade 9–12. The current administration consists of principal Karen McNamara and vice principal Theresa Noga-McArthur. The school was founded in 1958. It has been in its current building since 1992, and has added two additions to the building since then.
| St. Theresa's Catholic High School | |
|---|---|
| Address | |
 | |
347 Galloway Blvd. , , Canada | |
| Coordinates | 44°44′20″N 79°52′11″W / 44.73891°N 79.86983°W |
| Information | |
| School type | Separate high school |
| Founded | 1958 |
| School board | Simcoe Muskoka Catholic District School Board |
| Principal | Karen McNamara |
| Grades | 9 to 12 |
| Enrollment | 700 (2020) |
| Language | English |
| Colour(s) | Blue & White |
| Mascot | Storm the Thunderwolf |
| Team name | St. Theresa's Thunderwolves |
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