; (ii) the Attorney General; and (iii) the Secretary of Health and Human Services; (B) engage appropriate Federal, State, local, and nongovernmental organizations to identify, cross-promote, and disseminate information; and (C) be assigned such personnel and resources as the Secretary considers appropriate to carry out this section, including not fewer than 5 full-time equivalent employees. (3) Evidence-based tiers (A) In general The Secretary, in consultation with the Secretary of Education, the Attorney General, and the Secretary of Health and Human Services, shall develop tiers for determining evidence-based practices that demonstrate a significant effect on improving the health, safety, and welfare of persons in school settings. (B) Requirements The tiers required to be developed under subparagraph (A) shall— (i) prioritize— (I) strong evidence from not less than 1 well-designed and well-implemented experimental study; and (II) moderate evidence from not less than 1 well-designed and well-implemented quasi-experimental study; and (ii) consider promising evidence that demonstrates a rationale based on high-quality research findings or positive evaluations that such activity, strategy, or intervention is likely to improve school climate and promote school safety. (b) Functions The Clearinghouse shall— (1) serve as a central resource to identify, catalog, and describe best practices, case studies, and relevant Federal grants related to safe school design and evidence-based practices, for use by local education agencies, local law enforcement agencies, schools, architects, engineers, and others, and any other school safety topics related to school design as determined appropriate by the Secretary; (2) review and, as appropriate, incorporate finalized school safety recommendations from other related agencies, State and local partners, and appropriate nongovernmental organizations, such as national associations of architects and engineers