DEVELOPMENTS IN ELEMENTARY AND SECONDARY SCHOOL CURRICULUM REVISION FROM 1950 TO 1963 ARE REVIEWED AND EVALUATED. SCHOOL VISITATIONS, PROGRESS REPORTS, PROJECT CRITIQUES, AND INTERVIEWS AND CORRESPONDENCE WITH PROJECT DIRECTORS WERE USED TO OBTAIN INFORMATION ABOUT CURRICULUM DEVELOPMENT PROJECTS. PROJECT DESCRIPTIONS GENERALLY INCLUDE--(1) A BRIEF HISTORICAL REVIEW, (2) AN EXPLANATION OF THE RATIONALE AND MAJOR THEME, (3) MATERIALS DEVELOPED, AND (4) CURRENT STATUS AND FUTURE PLANS. MATHEMATICS, SOCIAL SCIENCES, PHYSICAL AND BIOLOGICAL SCIENCE, AND HEALTH EDUCATION PROJECTS ARE CONSIDERED. A FINAL SECTION IS DEVOTED TO (1) EDUCATIONAL OBJECTIVES, (2) CURRICULUM ORGANIZATION AND EVALUATION, AND (3) INSTRUCTION. THE REPORT ALSO INCLUDES A COMPREHENSIVE ANNOTATED BIBLIOGRAPHY. THIS DOCUMENT IS ALSO AVAILABLE FROM THE FUND FOR THE ADVANCEMENT OF EDUCATION, 477 MADISON AVENUE, NEW YORK, NEW YORK 10022, AT NO COST. (AG)