Section 148-31-6 - DIFFERENTIAL RATES FOR QUALITY REIMBURSEMENTA.Differential Rates: The Department under Maine's Child Care Subsidy Program (CCSP) Rules, 10-148 C.M.R. ch. 6 is required by 22 M.R.S. § 3737(3) to pay a differential rate for child care services that meet or that make substantial progress toward meeting nationally recognized quality standards. 1. The Department provides for graduated quality differential rates for steps that demonstrate that a child care provider meets or makes substantial progress toward meeting nationally recognized quality standards at or above a Star 3 (three) Rating.10-148 C.M.R. ch. 31, § 6