; and (ii) 50 percent of so much of the expenditures with respect to the provision of services and programs specified in section 471(e)(1) as are for training of personnel employed or preparing for employment by the State agency or by the local agency administering the plan in the political subdivision and of the members of the staff of State-licensed or State-approved child welfare agencies providing services to children described in section 471(e)(2) and their parents or kin caregivers, including on how to determine who are individuals eligible for the services or programs, how to identify and provide appropriate services and programs, and how to oversee and evaluate the ongoing appropriateness of the services and programs. . (d) Technical assistance and best practices, clearinghouse, and data collection and evaluations Section 476 of such Act ( 42 U.S.C. 676 ) is amended by adding at the end the following: (d) Technical assistance and best practices, clearinghouse, data collection, and evaluations relating to prevention services and programs (1) Technical assistance and best practices The Secretary shall provide to States and, as applicable, to Indian tribes, tribal organizations, and tribal consortia, technical assistance regarding the provision of services and programs described in section 471(e)(1) and shall disseminate best practices with respect to the provision of the services and programs, including how to plan and implement a well-designed and rigorous evaluation of a promising, supported, or well-supported practice. (2) Clearinghouse of promising, supported, and well-supported practices The Secretary shall, directly or through grants, contracts, or interagency agreements, evaluate research on the practices specified in clauses (iii), (iv), and (v), respectively, of section 471(e)(4)(C), and programs that meet the requirements described in section 427(a)(1), including culturally specific, or location- or population-based adaptations of the practices, to identify and establish a public clearinghouse of