I cant speak for anyone else but to add in my 2 cents for what its worth between high school and college to get into AEMT school and medic school afterwards ive taken physical science, biology, algebra I and II, geometry, anatomy, physiology, psychology, and composition and rhetoric. Im not sure there is much difference in canada but you will need at aleast a similar array of courses. Although i didnt take chemistry thats a hardship ill endure when i advance to medic school and take my pharmacology coarse. Also being certified as an EMR before EMT and AEMT school didnt hurt either.