Mass. Gen. Laws ch. 18C § 6
The child advocate or his designee shall have access at any and all reasonable times to any facility, residence, program, or portion thereof, that is operated, licensed or funded by an executive agency, and shall have unrestricted access to all electronic information systems records, reports, materials and employees in order to better understand the needs of children in the custody of the commonwealth or who are receiving services from an executive agency. The child advocate shall have access to relevant records held by the clerk of the juvenile court and the clerk of the probate and family court, including the right to inspect and copy, without cost. The child advocate shall be bound by any limitations on the use or release of information imposed by law upon the party furnishing such information, except as provided in subsection (e) of section 12.
Mass. Gen. Laws ch. 18C, § 6