Teachers at four schools in Lewisham, south east London, are set to strike on Thursday of next week.
The walkout will be the latest action against threats to turn the schools into academies. NUT union members at Prendergast Hilly Fields, Ladywell Fields, Prendergast Vale and Sedgehill School also struck on 12 February.
Workers hope NASUWT and GMB union members will join next week’s walkout. The GMB ballot results were due as Socialist Worker went to press.
The battle to stop academies in Lewisham has huge support. Parents and students joined picket lines to show their support for the last strike.