No - you cannot use a visitor visa to study.
You will need to obtain a study permit to study at the high school level. Since you are an international student, you will also have to pay tuition of approximately $14,000 each year.
The first step will be to get a letter from a school that is willing to accept you as a student. The next step will be to apply for the study permit. You or your parents will need to demonstrate that you have at least $25K in funds available to cover your tuition and living expenses.
