Teachers will strike over pay in England and Wales on seven dates in February and March, the National Education Union (NEU) has announced.
National strikes are scheduled for 1 February, 15 and 16 March. There are several regional dates too.
The NEU is the UK's largest education union, and says the strike will affect 23,400 schools in England and Wales.
Education Secretary Gillian Keegan says she plans to meet union leaders later this week.
Head teachers are expected to take "all reasonable steps" to keep schools open for as many pupils as possible during a strike, according to Department for Education guidance.
