Provides that, beginning in 2006, the department shall have the authority to allow up to fifty youth reaching age eighteen to continue in foster care or group care as needed to participate in or complete a posthigh school academic or vocational program, and to receive necessary support and transition services.

Provides that, in 2007 and 2008, the department has the authority to allow up to fifty additional youth per year reaching age eighteen to remain in foster care or group care as provided in this act.

Declares that a youth who remains eligible for such placement and services pursuant to department rules may continue in foster care or group care until the youth reaches his or her twenty-first birthday.

Provides that, beginning in July 2008, and subject to the approval of its governing board, the Washington state institute for public policy shall conduct a study measuring the outcomes for foster youth who have received continued support pursuant to RCW 74.13.031(10). The study should include measurements of any savings to the state and local government. The institute shall issue a report containing its preliminary findings to the legislature by December 1, 2008, and a final report by December 1, 2009.