I edited this response it was not on point enough. I argue Multi-culturalism in Canada has sent a signal to all Canadians they can be all things at all times. They can not and a class with sexual values is a classic illustration. Trudeau adds to this with his constant mixed messages such as sucking up to Muslim extremists to get their vote knowing they are fundamentally opposed to his gay and feminist ideology yet after sucking up to Muslim extremists sucking up to gays and feminists. The gay and feminist communities have fawned over Trudeau and not called him out while Trudeau fawns over bringing people to Canadawhose values are anti gay and anti women and anti many other things fundamental democracy believes in and something has to give.
Certain cultural values in Canada may are NOT compatible with ones brought here by certain Muslims and others an views as to sexuality is a classic example. Children can and should be taught sex education. Learning about the body and its functions can be done early and children deal with it far more rationally than adults riddled with phobias and entrenched bigoted views.. Children need sex education as part of health education to prevent ignorance, illness and be able to unfortunately in this world, protect themselves and know what is private.
You have a problem about sex behavior and identity choices understand that is not synonomous with sexual education. Sexual education is about teaching children health, hygiene and how bodies of homo sapiens and other animals work. Issues as to sexology and psychology are not the same as what we are talking about. The curriculum mixed them up because the person who wrote them for the Ontario school system was a pedophile and felt projecting sexual values on children was acceptable. Sex education is not about gender identity choices or sexual behavior-its about anatomy. Issues about sexual or gender preference, identity, feelings are for another subject called human relations which contains sociology, psychology, sexology, some basic genetics , neurology and biology. Sex education is about specific body parts and what they do and why we have them and is a sub-issue under health issues as to hygiene and health and wellness issues.
If people are ignorant and want to panic because they can't deal with anatomy and basic health concepts then not in the public system. Take their ignorance to a private school. They should not expect public schools to cater to their beliefs.
I get keeping human relations until children are reaching puberty but that is a different subject and for that matter when its time to explain gender identity choices it can be done in an apolitical, non-denominational way.