; and (dd) are adjusted on an annual basis for cost-of-living increases to ensure those payment rates remain sufficient to meet the requirements of this section; (V) certify that the State will update, not less often than once every 3 years, the cost estimation model or cost study, following the process and in accordance with the requirements of this subparagraph; and (VI) certify that the State has established a system for appeals of the child care costs estimated with the cost estimation model or cost study. (iii) Payment practices Such State plan shall include an assurance that the State will implement payment practices that support the fixed costs of providing direct child care services. (B) Tiered system for recognizing and supporting the quality of child care services Such State plan shall certify that the State has implemented, or assure that the State will develop or revise within 3 years after first receiving funds under this section, with input (from early childhood education and development experts, from a diverse group of child care providers of a variety of provider types, from families, and from organizations representing child care directors, teachers, and other staff), a tiered system for recognizing and supporting the quality of child care services for which assistance is made available under this section, and that are inclusive and appropriate for such child care providers. Such tiered system shall— (i) include a set of standards, for determining the tier of quality of a child care provider, that— (I) uses standards for a highest tier that at a minimum are equivalent to Head Start program performance standards described in section 641A(a)(1)(B) of the Head Start Act ( 42 U.S.C. 9836a(a)(1)(B) ) or other equivalent evidence-based standards approved by the Secretary