42 USC 12613 - National service program

(a) In general 
Under the national service program component of the Civilian Community Corps Demonstration Program authorized by section 12612 (a) of this title, eligible young people shall work in teams on Civilian Community Corps projects.
(b) Eligible participants 
A person shall be eligible for selection for the national service program if the person
(1) is at least 16 and not more than 24 years of age; and
(2) is a high school graduate or has not received a high school diploma or its equivalent.
(c) Diverse backgrounds of participants 
In selecting persons for the national service program, the Director shall endeavor to ensure that participants are from economically, geographically, and ethnically diverse backgrounds.
(d) Necessary participants 
To the extent practicable, at least 50 percent of the participants in the national service program shall be economically disadvantaged youths.
(e) Period of participation 
Persons desiring to participate in the national service program shall enter into an agreement with the Director to participate in the Corps for a period of not less than nine months and not more than one year, as specified by the Director, and may renew the agreement for not more than one additional such period.