I'm sure Canada has laws and guidelines in place for the gifted student somewhere. You are on the right track with asking questions. Do some research and I bet you'll find what you are looking for. Call me cautious but I want everything I possibly can in writing and mandated.
I'm a former teacher with over 10 years experience in 3 different states. Coming from the inside, I saw way to many bad teachers to be comfortable with leaving it up to them alone. Some were to old and didn't want to be there, some were just there for the paycheck, some just didn't know any of the modern methods of teaching, and some were generally interested in helping but way to unable to do any good. Of my 10 years there were only a handful of teachers each year that I'd want my own personal child to be with.
Before I get bashed... I know there are absolutely wonderful teachers out there. It's just that our systems set them up for failure so even the good ones struggle. That's why I had to eventually get out. I couldn't stand that I was being told that I couldn't teach what the students needed. It killed me to see a student that I knew I could help if only I was allowed to do so.
So back to getting what you can from the laws of your area first. It protects you and it gives the teacher a way to do what is needed. As a teacher, without that little piece of paper, they either can't or won't give the student the accomodations.