I have a cousin that's a police officer and has a specialist role, he works as a helicopter pilot for Polair in Sydney (I think they call it Special Constable or something like that), anyway when he finished high school he applied to the academy at the age of 18 and 4 months to undertake the 'Associate Degree in Policing Practice' he said some aspects of it was hard such as fitness in some cases but at the end is worth it.