No lessons will be given at Wymondham High Academy on Friday after a gas leak on Thursday forced a temporary closure.
A spokesman for the academy said the leak 'has been addressed and is safe', but it has affected the heating system.
The leak occurred between the academy's South and Middle blocks.
The spokesman said: 'It [the leak] was not serious but enough to severely disrupt the heating system.'
It is not yet known what caused the leak.
Parents have been sent emails informing them of the closure.
Despite the academy being closed for lessons, Year 11 and Year 13 pupils can attend the North and East blocks for independent study and exam preparation.
College students in Year 10 should still attend.
The college minibus will run as usual.
The academy will also be open to staff, who can be accommodated in the blocks which can be opened.
Schools across the country break for half-term next week, with lessons starting up again on February 22.
Wymondham High Academy is a mixed comprehensive academy specialising in arts and sciences.
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