A case of coronavirus has been identified at St Saviour's School.
A class bubble has been sent home and the children have been told to self-isolate.
They will be tested after five and eight, subject to parental or carer consent. The school remains open.
"All parents have been informed and the school remains open, following advice from Environmental and Public Health.
"The children in isolation will continue to receive school work and will carry on with their education. The premises has been disinfected and the school is continuing to follow the latest Public Health advice." - Mark Rogers, Director General of the Department for Children, Young People, Education and Skills.
It comes just days after a class from St Michael's private school was also closed because a child test positive for Covid-19.