First Aid is designed to be taught to anyone with the willingness to render First Aid to someone who is in need. To successfully complete a Senior First Aid course you do not need to be academically minded, or exceptionally bright, you just need to have a willingness to learn.
Most Government Acredited First Aid courses in Australia require about 7 hours of face to face teaching over one to two days and both a practical exam (involving CPR and some splinting) and a little written exam. However, it should be noted that First Aid is designed to be taught to everyone and that you will never find a First Aid Instructor who goes out of their way to fail you.
We want all people to be capable of providing first aid!