We go by the Curriculum of student’s school board.

For example:

If student is from Brooklyn Heights, Brooklyn, NY, United States. We use the curriculum of the school board of Brooklyn Heights.

If student is from Toronto, Ontario, Canada. We use the curriculum of the school board of Toronto.

Furthermore, we prefer to teach the student by using the same book which student’s school is using. We do this just to make sure that students taking classes with us are going ahead in their class also.