STBU

Welcome to the home page of OSSTF District 12 Toronto Secondary Teachers' Bargaining Unit (STBU), the largest bargaining unit in OSSTF, representing over 6000 secondary school teachers employed by the Toronto District School Board! 

Our members are high school teachers in Toronto District School Board secondary schools, junior high schools, and in all TDSB continuing education credit-granting night, summer and adult day schools.