The teacher at the Itis Pininfarina school told a class of 16-year-olds that homosexuality is a “psychological problem”, Il Secolo XIX reported.
She reportedly backed up her claims by saying the gay “illness” had been scientifically proven, describing the case of a man who had been “converted” from homosexuality.
According to the teacher, the man underwent months of therapy following childhood trauma, after which he supposedly gave up his gay lifestyle and had a family with a woman.
The story and wider lesson was however described as “the perfect manual of homophobia” by pupils and strongly condemned by the school’s headteacher.
“Here there could be gay students or teachers. It’s my duty that this place remains a place in which everyone can be accepted and enjoy the same rights,” headteacher Stefano Fava was quoted as saying.
He described the religion class as a “serious incident” and said he would speak to pupils and the teacher directly, before sending a report to the regional education office.