This report is an evaluation of a New York City school district educational project funded under Title I of the Elementary and Secondary Act of 1965. The major objective of the program was to increase student competency in math computational skills. Approximately 3,000 high school students in grades 9 through 11 from 32 high schools were selected as participants. Class size was reduced to 15 students to allow for individualized instruction. Math labs equipped with calculators, printing calculators and programmable calculators were available for student use. Their use was designed to interest students in math and to make students familiar with these machines since they are often used in business and might increase students' employment opportunities. The program was staffed by a project coordinator, teacher-trainers, teachers, and teacher-aides. The Metropolitan Achievement Test (MAT) Computational Sub-Test was administered as a pretest and as a posttest. A historical regression analysis of the achievement test data revealed statistically significant differences in the scores. Program participants, on the average, made one year gains in actual achievement beyond that which was predicted on the basis of their previous history of achievement. (Author/BS)