A fire razed 12 houses and a school in Barangay Pusok in Lapu-Lapu City, Cebu on Wednesday.
Property damage was estimated at P550,000.
One of the victims sustained a minor burn on his right arm.
Investigation showed the blaze started in the library of Pusok National High School before it spread to the residential area at the back.
It took hours before the fire was put out, leading to the suspension of classes of the school.
Most of the classrooms had damaged windows due to the firemen's water spraying, resulting in wet teaching materials.
Lapu-Lapu officials said classes can continue on Thursday.
Affected residents are currently staying at the school's gym.