The commissioner may select and enroll in the Washington service corps program any person who is at least eighteen years of age but has not reached their twenty-sixth birthday, is a resident of the state, and who is not for medical, legal, or psychological reasons incapable of service. Efforts shall be made to enroll youths who are economically, socially, physically, or educationally disadvantaged. The commissioner may prescribe such additional standards and procedures in consultation with supervising agencies as may be necessary in conformance with this chapter. In addition, the commissioner may select and enroll youth fourteen to seventeen years of age on special projects during the summer and at other times during the school year that may complement and support their school curriculum or that link and support service with learning.