The Boeing Company contracted with the Northwest Regional Educational Laboratory to evaluate its student internship program, part of a "school-to-work" effort modeled after the nationally recognized Tech Prep initiative. The company's involvement in the Tech Prep Program has been implemented in three phases: (1) the initial phase helped build the applied academic foundation in Washington State's secondary school systems; (2) the second phase promoted the development of a statewide manufacturing technology degree program and provided a work-based student internship program. The third phase involves a consortium with Boeing and other manufacturing companies and educators to develop manufacturing competencies and curriculum modules based on the needs of industry and to involve other companies in Washington in expanding work-based learning opportunities for young people. This program for students enrolled in a manufacturing technology program provided three progressive sessions offered in the summers of the 11th, 12th, and 13th grades. Its goal was to introduce students to career opportunities in manufacturing technology, teach basic manufacturing skills, develop workplace basics skills, help students plan for their future, and assist in high school dropout prevention. The purposes for this evaluation are to: (1) describe the operations and outcomes of the student internship; (2) provide information for continuous quality improvement of the internship; (3) document the impact of the internship on students and others; and (4) identify promising practices related to the internship that could be adapted by others in business and industry. Evaluation methods included the following: review of documents describing the internship structure, student selection process, and curriculum; interviews with interns and a sample of alternates; written surveys of 1993 (n=23 pre, 19 post) and 1994 (n=85) interns before and after summer internships; and follow-up study of work and educational experiences since high school graduation. Findings from written pre- and postinternship surveys and personal interviews indicated that the Boeing internship had the following effects: increased student understanding of manufacturing, influenced several potential dropouts to stay in school, enhanced or confirmed students' career plans, motivated students to go on to postsecondary education, and improved their workplace and employability skills. (Appendixes include survey instruments with responses and interview questions.) (YLB)