Big Brothers Big Sisters of America is a nonprofit social welfare organization that coordinates the programs of hundreds of agencies in the United States. The programs assist children between 6 and 18 years old who mostly come from low-income homes. Professional caseworkers pair each child with an adult volunteer who provides guidance and friendship.
The movement to form such an organization began in 1902. A national federation for boys and girls was created in 1917 but discontinued in 1937. In 1946, Big Brothers of America was organized for boys only. Big Sisters International was formed in 1970. In 1977, the two groups merged. Headquarters are in Philadelphia.