bobtait replied the topic: Part 10 human performance
That depends on which exam you are referring to. If you are sitting the PPL exam is is required. If you are sitting the RPL exam (commonly called BAK) it depends on whether your flying school sets its own exam or uses the CASA exam. I suggest you ask your instructor whether your school sets its own, in which case he/she could tell you if you need HPL. If you are sitting the CASA exam, it would be advisable to study HPL because there could be questions on it.