(1) Except as otherwise provided in this chapter, the juvenile court shall not accept the filing of a child in need of services petition by the child or the parents or the filing of an at-risk youth petition by the parent, unless verification is provided that the department, or a community-based entity under contract with the department, has completed a family assessment. The family assessment shall involve the multidisciplinary team if one exists. The family assessment or plan of services developed by the multidisciplinary team shall be aimed at family reconciliation, reunification, and avoidance of the out-of-home placement of the child.
(2) A child or a child's parent may file with the juvenile court a child in need of services petition to approve an out-of-home placement for the child before completion of a family assessment. The department shall, when requested, assist either a parent or child in the filing of the petition. The petition must be filed in the county where the parent resides. The petition shall allege that the child is a child in need of services and shall ask only that the placement of a child outside the home of his or her parent be approved. The filing of a petition to approve the placement is not dependent upon the court's having obtained any prior jurisdiction over the child or his or her parent, and confers upon the court a special jurisdiction to approve or disapprove an out-of-home placement under this chapter.
(3) A petition may not be filed if the child is the subject of a proceeding under chapter 13.34 RCW.