When funds are available, the department may:
(1) establish and operate places for detention and diagnosis of children committed to it;
(2) establish and operate additional treatment and training facilities, including forestry or parks-maintenance camps and ranches, necessary to classify and treat children committed to the department according to their needs;
(3) establish active parole supervision to aid children given conditional release to find homes and employment and to become reestablished in the community; and
(4) assist in establishing training facilities and programs owned and operated by private individuals or organizations which agree to provide services to children committed to the department, including programs for children needing long-term residential care.