This evaluation of the Case Management Partnership Initiative (CPMI) found that the program successfully linked high-need families with services designed to prevent truancy. The truancy prevention program, implemented at Anacostia and Ballou High Schools in 2011-2012, links chronically truant ninth graders and their families to social services and case management, and includes weekly interagency case management meetings. While the evaluation found that the program was implemented as intended, it is unclear whether the program's efforts impacted truancy among participants. Nonetheless, CMPI remains a promising platform for additional program experimentation, including possible modifications to timing, eligibility criteria, and program components. (Contains 6 tables, 2 figures, and 5 footnotes.) [This report was produced by the District of Columbia Crime Policy Institute, part of the Urban Institute. This project was supported by a grant awarded by the Justice Grants Administration, Executive Office of the Mayor, District of Columbia. The funding for this grant was provided through the Byrne Justice Assistance Act Grant Program, through the American Recovery and Reinvestment Act, by the Bureau of Justice Assistance.]