Mass. Gen. Laws ch. 15D, § 12
(e) The comprehensive system for measuring the performance and effectiveness of programs shall be designed to measure the extent to which every preschool-aged child receiving early education and care in the commonwealth through the Massachusetts universal pre-kindergarten program has a fair and full opportunity to reach such child's full developmental potential and shall maximize every child's capacity and opportunity to enter kindergarten ready to learn. The comprehensive system shall be designed to include, but not be limited to, measuring a program's ability to provide: