If a child is placed in a qualified residential treatment program as defined in this chapter, the court shall, within sixty days of placement, hold a hearing to:
(1) Consider the assessment required under RCW 13.34.420 and submitted as part of the department's social study, and any related documentation;
(2) Determine whether placement in foster care can meet the child's needs or if placement in another available placement setting best meets the child's needs in the least restrictive environment; and
(3) Approve or disapprove the child's placement in the qualified residential treatment program.