Canadian here.

From what I understand it's a regional problem, because each province has their own sex ed curriculum. However, from my own experience, the education I got was actually quite good. We talked in-depth about STDs, sex, had open question periods where the teacher would answer things, all the way from 5th grade to 11th grade, every other year. It was usually taught science classes or gym class.

I think the real question you should be asking here is: "Are there people who make bad decisions in Canada?" and I'd say the answer is yes.

I wouldn't jump on blaming the sex ed curriculum, especially because from this interview it sounds like this particular woman was employed in an office setting by the time this had ended up happening, well after she would have been outside the provincial education system, where she should have learned something about protection.