Aaron Foster, 20, of Stanningley Drive in Mixenden, caused £180,000 worth of damage to Mixenden Library when it was set alight in August 2020.
On the evening of February 1 this year, he started a blaze which engulfed the upper site of Ash Green Primary School, also in Mixenden.
He had denied both arson charges, but a jury at Bradford Crown Court returned unanimous guilty verdicts at the end of his trial yesterday (Wednesday).
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The officer who led the investigation, Detective Constable Louise Halliwell of Calderdale CID, said: “We welcome the verdict of the jury in the case today as hopefully it will provide some reassurance to the local community.”
Foster was remanded back into custody after the guilty verdicts were returned and Recorder Simon Myerson QC said fixed his sentence hearing for October 12.
The huge fire at Ash Green Primary School caused tremendous damage, destroying four classrooms belonging to Years 3 to 6.
Thanks to a tremendous effort by the school, parents and the rest of the community, children were able to be back in the school just a few weeks later.