After spending about a year in a puppy raiser's home, the puppy returns to Guide Dogs for the Blind for more formal training where he or she will learn to guide a visually impaired partner.  Puppy raisers are responsible for providing all the socialization, basic training, attention, and love, the puppy requires to become a guide dog candidate.  The actual guidework training is done by the professional instructors on the Guide Dogs campus (in either California or Oregon).