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."

Another successful year for Santa's Cause
Council set to relaunch petitions scheme
Two men questioned after A48 collision
Candlelighting held at Barry chapel
Power tools found in stolen vehicle
Engineering works to hit Christmas trains
Council sets out future housing plans
Joint police and fire control room criticised
Costs rise for new Cowbridge school
St Athan: plans to build 51 new council homes
Vale Council to continue tax premiums
Penarth: work to make cliff safe after landslips
Debate over single Welsh police force reignited
New five-year food strategy launched
£20 million regeneration Plan submitted to the UK Government
Popular Barry Island Chippy announces its closure
Missing Penarth man found after appeal
Parc prison expansion plan ''ill-judged''