A Scout (in some countries a Boy Scout, Girl Scout or Pathfinder) is a boy or a girl, usually 11 to 18 years of age, participating in the worldwide Scouting movement. Because of the large age and development span, many Scouting associations have split this age group into a junior and a senior section. Scouts are organized into troops averaging twenty to thirty Scouts under guidance of one or more Scout Leaders. Troops subdivide into patrols of about six Scouts and engage in outdoor and special interest activities. Troops may affiliate with local, national, and international organizations.