Five boys aged between 11 and 15 are due in court charged over a fire at a school in Leyland last September. Parts of St Mary's Catholic Technology College had to be demolished and extensive re-building is still needed.
The building, which was built in 1957, had no sprinklers.
Lancashire police released a statement confirming the boys from Leyland, have been charged with "arson with intent/reckless as to whether life was endangered and arson with intent to endanger life."
More top news
Watch the moment a ‘magnet fishermen’ caught a hand grenade in a canal - sparking a major police operation.
The senior coroner for Cumbria concluded in a third court judgment the toddler was sexually assaulted in her father's bed before her death.
Scott Quigg and his girlfriend on their life together as he prepares for another crack at a world title.