The Education Department says schools will do everything they can to stay open on Friday.
Civil servants, including teaching assistants, are due to strike for two hours in a dispute over pay.
The walkout is scheduled to take place between 9am-11am on Friday.
Unions are yet to confirm if those taking part will protest in the Royal Square.
Headteachers have written to parents warning them of potential disruption and advising them to prepare for possible class closures.
Each school has to assess how staff absences will impact on safe levels of supervision.
"Schools and the Department are committed to doing everything they possibly can to avoid the interruption of the learning for children and young people, but the main priority is for their safety at school.
While schools will do everything they possibly can to stay fully open, the right of those who wish to go on strike is acknowledged." - Mark Rogers, Director General - Department for Children, Young People, Education and Skills.

Les Mielles golf course up for sale
Youngest politician is first guest on new Channel 103 show
Call for urgency on any Jersey under-16 social media ban
Jersey teen 'shocked' at winning music competition
Under-16 social media ban 'will protect children'
Hospital air-con failure fixed
Jersey Zoo welcomes baby cabybaras
Parish officially takes over Sandy Park
Comments
Add a comment