; (B) include any evidence or research rationale supporting the determination of the Clearinghouse that the best practice or recommendation has been shown to have a significant effect on improving the health, safety, and welfare of persons in school settings, including— (i) evidence from an experimental or quasi-experimental study; (ii) high-quality research findings or a positive evaluation that such activity, strategy, or intervention is likely to improve the health, safety, and welfare of persons in school settings; (iii) findings and data from previous Federal or State commissions relating to school climate, health, safety, and welfare; or (iv) any other supporting evidence or findings relied upon by the Clearinghouse in determining best practices and recommendations; and (C) include information on Federal grant programs for which implementation of each best practice or recommendation is an eligible use for the program. (3) Past Commission recommendations To the greatest extent practicable, the Clearinghouse shall present, as appropriate, Federal, State, local, Tribal, private sector, and nongovernmental organization issued best practices and recommendations and identify any best practice or recommendation of the Clearinghouse that was previously issued by any such organization or commission. (c) Assistance and training The Secretary may produce and publish materials on the Clearinghouse to assist and train educational agencies and law enforcement agencies on the implementation of the best practices and recommendations. (d) Continuous improvement The Secretary shall— (1) collect for the purpose of continuous improvement of the Clearinghouse— (A) Clearinghouse data analytics; (B) user feedback on the implementation of resources, best practices, and recommendations identified by the Clearinghouse; and (C) any evaluations conducted on the best practices and recommendations of the Clearinghouse