I am a senior three student, and I have obtained a high school diploma. What are the requirements for applying for senior three in Canada?

If you get a diploma in Canada, you don't need to go back to high school. If you feel that your high school grades are not satisfactory, and you want to make up for it by repeating high school, and then rush to a good university, I suggest you choose to study in college for preparatory courses or university transfer credit courses. The preparatory course takes about 6-8 months, and it seems how long it will take to learn the language, and then you can apply for a university with the results of the preparatory course. In addition, the university credit transfer courses in colleges are generally 1+3, or 2. Both of them don't need to provide IELTS scores separately, but also have language classes.

Of course, if the undergraduate course is not the only choice, you can apply for a college in Canada with your high school grades and diploma, and the requirements for the college are relatively low. The advantage is that it is easier to immigrate and change identity.