How is the Ward intended to help teach the patients to function in society?

Sadly, the treatment of the patients on the ward isn't conducive to teaching them how to cope in society. The patients are often mistreated and over medicated. Some of the patients on the ward aren't mentally ill at all, but they have medical conditions that cause them to behave oddly, such as the two men who have epilepsy. One man comes to this ward with no mental disease at all, but is treated as though he is psychotic, eventually suffering a full lobotomy. Kesey's purpose in the novel isn't to tell us what should be done, but rather, to expose the atrocities.