California Code, Welfare and Institutions Code - WIC § 4346

(a) Each primary intervention program shall have a core team consisting of school-based mental health professionals, including credentialed school psychologists, school counselors, school social workers, or local mental health program professionals, or a combination thereof, and child aides.

(b) The school-based mental health professionals shall be responsible for accepting referred children into the program, supervision of the child aides, assignment of a child to an aide, evaluation of progress, and determination of termination from the program.  The mental health professionals shall supervise the scoring and interpretation of screening and assessment test data, conduct conferences with parents, and evaluate the effectiveness of individual aides.

(c) Child aides, under supervision of the school-based mental health professional, shall conduct weekly play sessions with children served in the primary intervention programs.  Child aides may be salaried school aides, unpaid volunteers or other persons with time and interest in working with young children, and who may be provided stipends to meet expenses.

(d) All aides shall undergo a time-limited period of training that is focused on the main intervention strategies of the particular program and is provided prior to direct contacts with the children served in the primary intervention programs.  Training shall, at a minimum, include basic child development, crisis intervention, techniques of nondirective play, other intervention skills appropriate to identified problem areas, and instruction in utilizing supervision and consultation.