Elementary school teachers in the York Region District School Board will be in a legal strike position as of Monday and elementary teachers across Ontario will follow suit by the end of the year.

All 76,000 elementary school teachers in the province will likely be in a legal strike position before the Christmas break, according to the Elementary Teachers’ Federation of Ontario (ETFO).

As for high schools, 12 more boards will soon be taking strike action, a spokesperson for the Ontario Secondary School Teachers’ Federation (OSSTF) told CityNews.

A list of affected boards will be made available later on Friday, Lori Foote said.

The OSSTF job action started Monday in 20 boards, including Toronto, where teachers are refusing to supervise students outside of class and are suspending some administrative duties.

That same day, OSSTF president Ken Coran insisted the job action in its current state won’t affect day-to-day activities in the classroom.

Some elementary schools have cancelled their Christmas concerts as the labour dispute between teachers and the Ontario government escalates.

Toronto District School Board trustee Jerry Chadwick said 12 of 18 schools in his Ward 22 have cancelled their concerts.

Many Remembrance Day ceremonies were also cancelled or changed.

This is the latest action by a teachers’ union to fight Bill 115 — legislation passed by the provincial government last month that imposed a two-year contract on teachers, including a wage freeze, fewer sick days and a ban on strikes and lockouts.

Four education unions — ETFO, OSSTF, the Canadian Union of Public Employees and the Ontario Public Service Employees’ Union — have filed court challenges against the legislation.

After the bill passed, the teachers’ unions urged members to withdraw from voluntary activities, including leading extracurricular programs — a move that sparked widespread student protests.