The Department of Education has sent letters to primary schools to be distributed to parents, with further information on the antigen testing programme for pupils, which begins on Monday.
The letter reiterates that the most important way to protect against any onward spread of infection is that if a child has any symptoms of Covid-19, including a new cough, shortness of breath, high temperature, sore throat, they should self-isolate at home and a PCR test should be booked for them.
It stresses that children who have symptoms should not use antigen tests. From Monday, parents or guardians are being asked to contact their child's school principal immediately if they receive a Covid-19 positive test result for their child.