This publication presents a brief summary description of an experimental dropout prevention program developed at McClymonds High School in Oakland, California. The program described is Project MACK (More Advanced Careers and Knowledge), a four-year program funded under ESEA Title VIII that operated from the 1971-72 school year through the 1974-75 school year. Project MACK was designed to identify the needs of potential dropouts and implement programs to meet those needs. The project was composed of four components, including 1) instructional services (utilizing a career cluster program), 2) student support services, 3) community services, and 4) management services. During the project's duration, the percentage of dropouts at McClymonds High School decreased from 16.1 percent to 6.2 percent, and the school's absentee rate was reduced by 14.1 percent. (JG)