It's been confirmed that St Athan Primary School will remain closed until after the February half-term break.
Vale Council says remote learning will be in place next week while work continues on assessing the damage caused by Wednesday's fire.
At last one wing of the school suffered extensive damage - and crews used five engines and two water bowsers to contain the fire to a small block of classrooms and an IT suite.
The cause of the fire - which started in the roof - remains unknown and South Wales Fire & Rescue Service says their investigation will take a few days to complete.

A spokesperson for the council, said: "The school site will be closed until half-term - February 24th to 28th - so that damage caused by the fire can be properly assessed and repairs carried out."
"Remote learning arrangements will be in place next week, while packed lunches are available from St Athan Library for pupils entitled to free school meals."
"Internet-enabled devices are being sourced for any child that needs them, educational psychologists are on hand to help staff support learners and assistance with wellbeing is also being offered."

Councillors approve plans for over 300 new homes in Rhoose
Penarth school project sparks Welsh language transformation
South Wales and Gwent Police introduce new online portal for crime victims
Penarth Pier Pavilion Cinema awarded £65,000 for major equipment upgrade
New Cafe could be coming to High Street, should plans be approved
Reform MS Sarah Cooper-Lesadd has defected to Plaid Cymru
Public sector broadcasters facing “huge challenges”, according to Wales’ culture minister
Welsh Government Plans 30% Rates Cut for Hospitality and Leisure Businesses
Loan scheme to help bring landmark Cowbridge building back into use
Women less likely to receive lifesaving CPR as Calon Hearts calls for more realistic training
Shortlist announced for 2026 Vale and Bridgend Business Awards
Vale Council to Consider Changes to Recycling and Waste Services
1,000 children vaccinated against Hepatitis A in Barry but there’s still time to protect your child
Plans have been approved to convert offices into a bedsit in Barry, despite police concerns
Police Appeal for Witnesses after Penarth Road collision
Penarth teacher to appear in new fly-on-the-wall S4C series
Barry Athletic bowler is county champion
Penarth Athletic launches public consultation on major rebuild nine months after devastating clubhouse fire
Barry Learner Secures Place to Study Medicine After Transformative Return to Education