SCIENCE PROGRAMS FOR THE DISADVANTAGED HIGH SCHOOL STUDENT ARE FREQUENTLY DEFICIENT IN CONTENT, IN FACILITIES AND MATERIALS, AND IN PROPER INSTRUCTION AND TEACHER ATTITUDES. RATHER THAN A REVIEW OF HEALTH, NUTRITION, AND DISEASE, PROGRAMS FOR THE DISADVANTAGED SHOULD TEACH FUNDAMENTAL SCIENTIFIC CONCEPTS BY USING A DISCOVERY APPROACH AND LABORATORY TECHNIQUES. IN 1963, THE BIOLOGICAL SCIENCES CURRICULUM STUDY DEVELOPED THREE EXPERIMENTAL UNITS (GENETICS, ECOLOGY, AND CELLULAR BIOLOGY) FOR TEACHING BIOLOGY TO THE LOWER 30 PERCENT OF STUDENTS IN ACADEMIC CLASSES. THESE UNITS WERE TO BE TESTED ON 1,000 STUDENTS DURING THE 1963-64 SCHOOL YEAR, AND THE PROGRAM WAS SCHEDULED FOR COMPLETION BY 1964. THIS ARTICLE WAS PUBLISHED IN "THE SCIENCE TEACHER," VOLUME 30, NUMBER 6, OCTOBER 1963. (NH)