Crack : Art schools usually have art groups at least 2 nights a week, where the school pays for a model to pose for 3 hours, and ANY students from any art major can go in and grab a bench to sketch/paint/sculp... I think the only thing you are not allowed to do is to photograph or film the model.
Maybe you can enroll in a class
'Life Drawing' - Understanding the Human Body..
(sorry for hijacking the thread a lil, raeanna)