Teachers across the north are fuming over a provincial directive that says: this fall, schools must teach a sex-ed curriculum that comes from 2014, before the Wynne Liberals updated it.

There are fears that with the new school year just around the corner, some key lessons will left out.

It came with a stern warning from the government, teach what we tell you or else.

Vic Fedeliis Ontario’s Finance Minister and MPP for Nipissing.

"The province sets the tone for education in the province of Ontario." said Fedeli.

In this case, it is rolling back to a sex-ed curriculum that's now five years old with roots that go back two decades. Something teachers in Sudbury lament.

Barb Blasutti is the President of a local chapter of Elementary Teachers Federation of Ontario.

"We're throwing out the 2015 curriculum which is an absolute shame. He is deliberately trying to mislead the people of Ontario by referencing it as the curriculum used in 2014. The one we used in 2014 was developed in 1998." said Blasutti.

Meaning it's been a while since anyone taught it and many teachers never have. So will they be ready?

"The short answer is no. No one can learn an entire curriculum in less than a week, but then again, teachers will do whatever they need to do." said Blasutti.

And what about what they won't be teaching?

There are some key things that the 2014 curriculum doesn't have. It doesn't talk about sexting or the idea of being transgender. But one 7-letter word that's now missing could have the biggest impact: consent. Some experts say it should be the foundation of sexual education and taking it out could have serious consequences.

Jennifer Johnson teaches women's gender and sexuality studies at Thorneloe University. She says consent isn't just about sex.

"Think about consent in everything from physical education, to how kids walk through the door and have lunches, who can touch a child, and who cannot." said Johnson.

And if that talk isn't happening in the schools?

"We'll have a group of children who need to be either re-educated in the future, or need to seek that information elsewhere." said Johnson.

ut many still wonder if nobody's teaching it in Doug Ford's classrooms, where do you learn?