This report describes and evaluates the Boise (Idaho) School District's operation of a Chapter 1 Project, the Elementary Structured Tutoring Program. The project provides tutoring in reading and mathematics skills to educationally deprived students in grades 2-6. Tutors are either paraprofessional adults or supervised students (grades 4-6) who volunteer 20 minutes each day to assist younger students. The program is carefully structured to ensure that positive reinforcement strategies are used and objectives are met. Tutors undergo two to three days of pre-service training which emphasizes positive reinforcement techniques. The program is closely coordinated with the regular classroom curriculum, and various efforts are made to involve parents and the community. The report describes successful features of the program, such as the effectiveness of its emphasis on positive reinforcement and its efficient use of time for maximum learning. Student progress is monitored closely, and participants receive continuous feedback. A system has been established to regularly recognize and reward outstanding work. Results of annual evaluations are presented for the school years between 1980-81 and 1985-86. Program effectiveness is high and steadily improving. Parents and teachers have responded very positively to the program; many have commented on the improvement in pupil's attitudes. (KH)