Thousands of pupils across the county could face disruption next month after two teaching unions announced strike action over pay, pensions and working conditions.
The National Union of Teachers and NASUWT have called for their members to down tools and walk out on October 1 in the east of England, which includes Essex.
Members in the East Midlands, West Midlands, Yorkshire and Humberside will also strike on the same day, while those in the North East, London, the South East and the South West are set to strike on October 17.
The unions said that teachers are "angry, frustrated and concerned" about the Government's reforms, which make teachers' pay linked to performance in the classroom and being paid by schools, rather than in line with a national framework.
It is not yet clear how many schools in the county will close due to the action in the county on October 1.
