Science teacher John Treadway will be putting down his pens at the end of term after 34 years at Archbishop Tenison School.
Head of the Selborne Road school's science department, Mr Treadway joined the school in 1971.
Mr Treadway was shortlisted for the chemistry teacher of the year award in 2002. He also worked with former governor Stan Peacock on two Royal Society projects, one won the school a Darwin award, and one gained the Nuffield award for the school's research into the use of superglue in dating fingerprints.
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