Versions of 6 USC 665k - Federal Clearinghouse on School Safety Evidence-based Practices on LawServer 2024 6 USC 665k – Federal Clearinghouse on School Safety Evidence-based Practices 2023 6 USC 665k – Federal Clearinghouse on School Safety Evidence-based Practices 2022 6 USC 665k – Federal Clearinghouse on School Safety Evidence-based Practices