Teachers across Merseyside will walk out on four dates in February and March in an ongoing row over pay.
Nine out of 10 teacher members of the National Education Union (NEU) voted for strike action and the union passed the 50% ballot turnout required by law. The union has declared seven days of walkouts in February and March, but it has said any individual school will only be affected on four of the days.
The first day of strikes will be on February 1 and more than 23,000 schools in England and Wales are expected to be affected, the NEU has said.
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The outcome in England was described as "the biggest ballot result of any union in recent times" by one of the union's joint general secretaries, while the other said it will give teachers "strength in the negotiations" later this week.
Across Merseyside, strikes will take place on February 1, February 28, March 15 and March 16.
Mary Bousted and Kevin Courtney, joint NEU general secretaries, said in a statement: "It is disappointing that the Government prefers to talk about yet more draconian anti-strike legislation, rather than work with us to address the causes of strike action."
Dr Bousted indicated there will be no minimum service levels in place during the teachers' strike, telling BBC Radio 4's PM programme, adding: "I'd like those minimum service levels to exist every day, so that every day in all our schools we have enough teachers in the right subject areas so that all children can get the education they deserve."
The Department for Education has issued updated guidance to say agency staff and volunteers could be used to cover classes on strike days, with schools expected to remain open where possible, although remote learning is also an option and the most vulnerable pupils are to be given priority.
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