In grade 7 my daughter had the BCTF union rep as her teacher at the time of their last strike. 
The whole class was indoctrinated on a daily basis re the BCTF and NDP party line.
Complaints further up the chain, even as far as the School Superintendent got us exactly NOWHERE. They are all BCTF/NDP appartchiks- even the Superintendent was a former Principal, who by his own admission , had taken the job to stickhandle his own kids through high school.