To directly address the state of Washington's concerns regarding student alcohol and other drug use, in 1989 the state Legislature passed the Omnibus Alcohol and Controlled Substances Act (ESSHB 1793). One part of this act called for the creation of a school-based alcohol and other dug abuse prevention and early intervention program. The Office of Superintendent of Public Instruction (OSPI) is responsible for the administration of this program. OSPI allocates funds to local grantees for the purpose of placing in schools prevention and intervention specialists who assist students in kindergarten through Grade 12 to overcome problems of substance abuse and strive to prevent the abuse of, and addiction to, alcohol and other drugs, including nicotine. Prevention and intervention specialists provide early prevention and intervention services to students and their families, assist with referrals to treatment providers, and support the transition back to school for students who have received treatment for alcohol or other drug abuse. The ultimate goal of the program is to provide prevention and intervention services in schools to enhance the classroom environment for students and teachers, and better enable students to realize their academic and personal potentials. This report summarizes the results of an independent statewide program evaluation conducted by RMC Research during the 2001-03 biennium. The evaluation addressed both program implementation and program effectiveness. The findings of the 2002-03 evaluation strongly suggest that overall the Prevention and Intervention Services Program has promoted positive outcomes among students referred to the program. Still, the evaluation identified steps that could be taken to further strengthen the program, building upon improvements implemented during the last biennium. In particular, the increasing focus on science based practices suggests a need to reexamine current practice, and changes in the reporting requirements of funding agencies are driving refinements to the evaluation. (Contains 15 figures and 4 tables.)