This article is from the American Kennel Club FAQ, by Cindy Tittle Moore firstname.lastname@example.org with numerous contributions by others.
Junior showmanship is for children under 18 and over 10 years of age.
They are judged on their skills in handling and presenting their dogs
in the ring -- the dogs themselves are not judged although they must
be AKC registered and over 6 months of age. In order for a child to
being showing in Junior Showmanship, an AKC Junior Handler number must
be obtained from the AKC.
Regular Junior Showmanship classes include Novice and Open. Novice is
for all boys and girls who have not one three first place awards in
this class. Open is for those that have. The classes may be further
divided into Junior and Senior classes, the former for 10 to under 14
year olds and the latter for those 14 to under 18 years of age.
Best Junior Handler may be awarded by the host club. Those that placed
first in their class and are undefeated in any other class, may
compete for this award.