PART of Solihull School was completely destroyed in a severe fire on Wednesday morning.
Twelve fire trucks from Solihull and Birmingham and more than 60 firefighters tackled the blaze at the independent co-educational school on Warwick Road after they received a call around 2.45am.
A West Midlands Fire Service spokesperson said: "The incident involved a severe blaze engulfing 100 per cent of a single-storey timber constructed building - measuring approximately 20 metres by 20 metres - and formerly used as a gymnasium.
"It was totally devastated by fire and there was a slight spread of fire to the existing sports hall."
Fire investigation teams are in attendance to determine the cause of the blaze.
The old gym was used for small club sports including fencing and weightlifting, which will be relocated to the sports hall.
West Midlands Police said the fire was not suspicious.
A police spokesman said: "The early indication is that it is not arson."
Christopher Warren, bursar and clerk to the governors at Solihull School, said: "The total damage is in a very small area of the school and will not have any impact on school operations.
"Life will carry on. The most important thing is that no one was injured.
"The fire was put out at 4.30am. West Midlands Fire Service did an excellent job."
Headmaster David Lloyd added: "The damage to the gym will have absolutely no impact on the operation of the school or indeed on the release of GCSE results tomorrow (Thursday)."