What are you basing this on?
A focus? Really??? Or more of a tertiary glance? I have heard that some students possibly cover Canadian geography (label the provinces), and I have seen where in 6th grade, students are assigned a province to write a report on, or maybe gone into some historical details on how "Canada" won the War of 1812

but I wouldn't call that a focus. When I taught 6th Grade in Canada, ONE THIRD of our curriculum covered a study of the United States and the relationship between our two countries. Now that is a focus. This is an older reference (2010), but if you look at
slide 24, you can see which states it was mandatory to study Canadian content, which states where it was only recommended, and which states could care less. Any day now, I should be meeting some of those kids who are now grown up and being able to have a conversation about where I am from without getting questioning glances and glazed expressions.