The head of religious studies at a Shenley Brook End School has been charged for possessing a series of indecent images of children.
Phillip Allen, 48, had taught at the school since 2011.
He faces three charges of making indecent images of children - one of them at category A, which is the highest possible level of indecent images.
As a result of the police investigation he no longer works at the school but Allen was a prominent figure in religious education.
He has been a member of the teacher panel of the Times Educational Supplement (TES), for which he writes frequently.
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A spokesperson from the school, said: “I assure parents that we take our safeguarding responsibilities very seriously at Shenley Brook End School and as soon as the school was aware of the allegations, we immediately parted company with the member of staff.
“He was not allowed to return to the school and is no longer employed by the school.
“We are helping the police with their enquiries with the support of the local authority.
“No information has been provided to the school which suggests that these matters relate to any of our students, past or present, or children in the local area.”
Allen is due to appear in court for an initial hearing on Monday.
A spokesman for Northants police said: “We can confirm a 48-year-old man from Potterspury has been charged with making indecent images of children, following an investigation by Northamptonshire Police.”