A St John Primary school student in the same class bubble as the child who tested positive for coronavirus earlier this week has also now tested positive.
All children in that bubble went into self-isolation after the first student was diagnosed. The news of that case was sent to the media on Wednesday night.
Therefore, the affected students haven't been in school since then.
The government says it is not commenting further to protect the identity of this child and to respect the family's privacy.
The school was disinfected after the first case was discovered and it remains open to other students and staff.
There are now 82 known active cases of coronavirus in Jersey.
Statistics update: Since Thursday 22 October, 4 new cases have been identified (2 from inbound travel and 2 from...
Posted by Government of Jersey on Friday, 23 October 2020

£75,500 raised in Jersey Christmas Appeal Charity Auction
Government to announce support option for carers
Drink driving can cause 'life-changing' consequences
Parked cars damaged in Victoria Avenue crash
L'Ecume II: Lewis Carr jailed for 20 months for fatal collision at sea
Guernsey's former Chief Minister admits making indecent images of children
Minister approves 42 sheltered homes at nursing home
Jersey potato farm to be the site of Channel Islands' largest roof solar array