Dozens of schools are due to close tomorrow when members of the National Union of Teachers hold a one-day strike in an ongoing national dispute over issues including pay, pensions and workloads.

At least 22 schools have notified Norfolk County Council that they will be closed but, because they are under no obligation to tell the council, the final number is expected to be higher. The majority are believed to be primary schools.

A number of high schools said they would be partially open during the industrial action. Taverham High School tweeted that 'only year 12 students should attend. We are unable to accommodate the other year groups on that day'.

Reepham High School and College said only year 10 and year 12 students were expected to attend, while Wymondham High principal Russell Boulton told parents half the staff could be on strike, so the school would only be open to sixth form students.

In a message to parents, Gerard Batty, executive headteacher of Stalham High School, said he did not know how many staff would take part in the strike,

But he added: 'As you will be aware, Year 11 have left so, as of this moment, it is not my intention to shut the school to any year groups. There may be some minor disruption to some classes but we will try to ensure that students are in some gainful activity at all times.'

City of Norwich School said it would be open to all students, but warned: 'We would ask for patience as there will be some disruption, including room changes and different lessons to normal.'

Iceni Academy in Methwold said it would remain open, while in a tweet Flegg High School said: 'Currently hoping to be open, although there will be disruption to normal teaching. We will let parents know if this changes.'

Bluebell Primary and Avenue Junior in Norwich are among primary schools which will close.

Avenue Junior headteacher Debbie Dismore wrote: 'The decision to close the school has not been taken lightly but in this instance, where the majority of staff have elected to take lawful industrial action, I will have no choice but to take appropriate steps to ensure the health, safety and wellbeing of all pupils.'

Do you support the strike action? Email martin.george@archant.co.uk