This report presents a description and evaluation of the Nature-Computer Camp (NCC), a science- and technology-oriented program for sixth-grade students from the District of Columbia Public Schools. The NCC experience is designed to offer students opportunities in such environmentally-related areas as woodland ecology, stream ecology, geology, as well as in the development of computer skills. Major sections include: (1) background and project description (highlighting program philosophy, history, and content); (2) external evaluation design (explaining the planning, monitoring, and implementing the evaluation model); (3) evaluation results for the 424 students in the summer 1985 program (specifying findings for each of the program's four major objectives); and (4) appendices (presenting samples of the camp schedule, questionnaires, student knowledge and attitude tests, and teacher and counselor checklists for student competencies, skills, and social behaviors). Results, among others, show an increase in attitude scores, a mean score approximately equivalent to mastery of the designated computer and science skills, and a mean score approximately equivalent to acquisition of 91 percent of socialization skills. (ML/JN)