How old do you have to be to raise a guide dog puppy?

To puppy raise for the Seeing Eye (the most recognized guide dog school in the world), you must join 4-H, which requires you to be at least 9 years old. You must also have the support of your parents as someone must be at home during the day to care for the puppy and with you at school that means mom or dad.

The actual trainers, as opposed to puppy raisers, are adults.