I was born in America, lived in America til I was 6 and I have a US passport. I am currently a high school senior in Canada. Exploring my options as of university rn- would I be considered an international student if I was to apply to a US school?
If you’re an American citizen, then you are an American applicant.
Your foreign home address just means you are an American citizen residing abroad. There are lots of people who do this.