There are currently three ways a dog can "graduate" from guide dog school.
Working Guide- After 6 months of formal training, the dog is matched with a visually impaired partner. They train together and become a team.
Breeder Dog- The most exceptional dogs are chosen to join the breeding colony. These dogs live with a foster family in between litters.
K-9 Buddy- This is program matches dogs with blind children to provide companionship, love, and experience caring for a dog.