Schools in Ontario will go back to teaching the same sex-ed curriculum they did in the late 1990s this fall.
On Wednesday, the Ford government announced it was revoking an updated version brought in by the Liberals.
The newer sex-ed curriculum sparked controversy, particularly among social conservatives, when it was introduced in 2015.
"Well, we're disappointed, obviously," said Harvey Bischof, President of the Ontario Secondary School Teachers Federation.
"We were supportive of the...rewritten curriculum. We thought it was an appropriate curriculum, it took into account the realities of the times we're living in." Bischof told The Mike Farwell Show on 570 NEWS.
"To go backwards by 20 years just isn't productive for kids that are living in the real world."
Bischof says the new curriculum would have addressed issues such as, consent, same sex relationships and staying safe in an online environment.
"And here we are, kids live in that electronic world and they're going back to a curriculum that doesn't teach them how to maintain their safety within that kind of environment." he added.
He also doesn't buy the argument that there weren't enough consultations, adding 4,000 parents and a lot of educators were asked for their opinion in the creation of the new curriculum.
Bischof says studies from all over the world have shown that kids who are taught a proper, full health and physical education curriculum, including sex-ed, are better able to make good decisions and maintain their health and safety.
"So hiding this knowledge from kids, doesn't serve them, doesn't make them safer, in fact, it puts them at risk." he said.
with files from The Canadian Press