From Wiki

• Most school children in Canada do not wear school uniforms.

• Private schools, which are very much in the minority, do have school uniforms.

• Even within the sphere of government-funded schools, there are some schools that do have uniforms. Many Catholic schools in Ontario, for example, have uniforms. Charter schools in Calgary have uniforms. And there are some others.

• However, the vast majority of public (state) schools in Canada do not have uniforms.

• Coming from the UK, you probably will find that Canadian children are less concerned about clothing than British children are.

• Yes, Canadian teenagers do have their idiosyncracies, such as an affinity for inadeqaute clothing in freezing weather but, hey, they're teenagers.

• But, on the whole, you'll probably find that your children's clothing is a minor issue in the larger scheme of things.

• For other topics related to schooling in Canada, please see the Wiki article entitled Canadian Schooling.