(1) An agency shall prepare a written plan for each child in foster care and each child placed in its care by voluntary agreement. Such plans shall be prepared at the time a child comes under the supervision of the agency. Such plan shall be subject to review by the department. Failure to prepare such a plan shall be grounds for revocation of the agency's license.
(2) In its annual report to the department pursuant to § 37-5-519, the agency shall include the number of children in foster care, the total number of children who have been in care during the year, the number of plans prepared, the number of children adopted, and the average length of the stay of the children.