Children's Services, Dept. of - As introduced, requires the department to enter into an interagency agreement with the department of disability and aging to leverage their expertise to provide services and oversight for children in state custody, or at risk of coming into state custody, who have intellectual or developmental disabilities and to implement recommendations from the department of disability and aging in regard to service evaluations for children in or at risk of coming into state custody, placements for such children, oversight of placements for such children, training for department staff working with such children, and care coordination of such children. - Amends TCA Title 4; Title 8; Title 9; Title 33; Title 37 and Title 52.