Simon Martindale, a science teacher at Morecambe Community High School, drowned in the River Rothay in Cumbria on December 23.
Mr Martindale, 48, had a connection with the school stretching back to 1977.
He had worked at Morecambe High for 22 years and previously attended as a pupil.
John McNaughton, head teacher, said Mr Martindale was “a calm, unflappable professional who was well liked by students and staff.
“He was a dedicated teacher who cared for his students and his fellow staff members,” said Mr McNaughton.
“He was someone I could respect and use as a benchmark for the progress made here at Morecambe Community High School.
“He is already missed by colleagues and students, tears have been shed and the school will be well represented at his funeral later this week.
“There will be discussion with his family about creating a Chemistry Prize in his honour so that his name will continue to be associated with his school for generations to come. A sad loss.”
There will be special assemblies held all this week in Mr Martindale’s honour.
His funeral service will be held on Wednesday, January 8 at 11am at St Luke’s, Slyne with Hest.
The family have requested family flowers only and charitable donations should be made to Kays Farm Fellowship.
The school has already donated £300 to the fellowship from a ‘Christmas Jumpers’ event held last term, and will be doing more fundraising in the future.