Every certificate of incorporation which includes among its corporate purposes, the authority to care for children through the establishment or operation of an institution for destitute, delinquent, abandoned, neglected or dependent children shall have endorsed thereon or annexed thereto the approval of the office of children and family services. Provided, however, nothing herein shall authorize such corporation to place out or board out children, as those terms are defined in the social services law, or to care for children in a facility other than an institution possessing an operating certificate issued by the office of children and family services. No certificate of incorporation shall be approved pursuant to this section on or after June first, two thousand seven.