How difficult is it for a Canadian to get into Harvard?

I am a Canadian high school student in my final year. I have a 95% average and take English, math, history, and business related courses. I have a fair amount of extracurricular activities to support my application including business experience, student council, and organizing a leadership conference for younger grades in my school board. What would be my odds of getting into Harvard if I applied? I ask because I wouldn’t want to waste any time going through Harvard’s rigorous application process and completing all of the American testing if I have no chance of being accepted.

Thanks!

But your chances depend in large part upon your standardized test scores such as the SAT.

Look around. Are you the top student in your school district? Are you known by others as being so? For instance, if your school principal were asked who is the best student they have, would she or he say it was you without having to think much about it? If so, it may be worth pursuing a slot at Harvard. But if you can name even a few students who that principal would list more quickly or first, then it is probably not worth pursuing.