Key Club International is the oldest and the largest organization devoted to the principle of service, to the advancement of individual community and national welfare, and to the strengthening of international goodwill. Its membership spans the globe with almost 300,000 members in 80 countries.

The Bridgewater-Raritan High School Key Club is probably the largest club in the Bridgewater-Raritan High School with over 150 members every year. Meetings are held every Tuesdays in the old (big) cafeteria right after school.