Ontario Secondary School Teachers' Federation
From Wikipedia, the free encyclopedia
| Ontario Secondary School Teachers' Federation | |
| Founded | 1919 |
|---|---|
| Members | 50,000 |
| Country | Canada |
| Office location | Toronto, Ontario |
| Website | www.osstf.on.ca |
The Ontario Secondary School Teachers' Federation (OSSTF) is a trade union which represents 50,000 members across Ontario, Canada.
Founded in 1919, its membership includes public high school teachers, occasional teachers, teaching assistants, continuing education teachers, instructors and support staff from several Ontario universities.

