This report examines state-sponsored early intervention programs whose aims are to assist educationally and economically disadvantaged students to plan for postsecondary education. It highlighs common policy mechanisms and discusses practices that have become established over time. It highlights 17 programs in 12 states that are leaders in early intervention efforts (California, Florida, Georgia, Indiana, Minnesota, New Jersey, New York, Oklahoma, Rhode Island, Vermont, Washington, and Wisconsin). The programs are categorized by: general program approach, how the program is targeted, and program oversight and administration. Overall, more than half of the programs offer awareness and/or academic support services alone, and do not include financial incentives. Counseling and academic enrichment are the most common services provided. Most of the programs target middle and/or high school students. Some target student cohorts, while others target students in specific grades. Eligibility criteria for student participation vary considerably among programs, but low-income status is the most common criterion. All of the programs are overseen by state government agencies. In some states, these agencies also administer the programs. There are substantial differences in program funding. Results suggest that programs that combine multiple components are more effective than those that emphasize a single component. Tutoring, mentoring, and academic enrichment are important aspects of many programs. An appendix presents program descriptions. (Contains 88 references.) (SM)