The Elementary Teacher's Federation of Ontario is an intervener in a human rights challenge launched by an 11-year-old transgender girl fighting the repeal of the curriculum.

The interim curriculum, which replaces a modernized version drafted by the previous Liberal government in 2015, discriminates based on sex, sexual orientation, gender identity and gender expression, the commission said.

'There are youth in our province who don't have the benefit of caring, or informed families who are willing to provide sex education at home.'