PRESENTED IS AN EXPLANATION OF WHY CURRICULUM REVISION IN THE SCIENCES IS NECESSARY AND CHANGES THAT HAVE RESULTED IN BIOLOGY, CHEMISTRY, PHYSICS, AND EARTH SCIENCE EDUCATION. ALSO DISCUSSED ARE CHANGES IN TEACHER EDUCATION. SEVERAL PERTINENT QUESTIONS ABOUT THE NEW SCIENCE PROGRAMS ARE RAISED. SOME OF THE TOPICS DISCUSSED ARE--(1) THE BASES FOR SELECTING WHAT SHOULD BE TAUGHT SUCH AS THE NATURE OF MODERN SCIENCE, THE NATURE OF THE LEARNER AND THE LEARNING PROCESS, AND THE NATURE OF MODERN AMERICAN SOCIETY, (2) THE TRANSFORMATION OF HIGH SCHOOL PHYSICS WHICH PRESENTS A CASE STUDY IN THE DEVELOPMENT OF NEW PHYSICS PROGRAMS, (3) THE NEW BIOLOGY AND NEW WAYS TO TEACH IT, (4) NEW CHEMISTRY DEVELOPMENTS INCLUDING DISCUSSIONS OF TRADITIONAL, CHEMICAL BOND APPROACH, AND CHEMICAL EDUCATION MATERIALS STUDY CHEMISTRY, (5) THE NINTH GRADE COURSE IN SCIENCE INCLUDING DISCUSSIONS OF EARTH SCIENCE, BIOLOGY, AND PHYSICAL SCIENCE, (6) TEACHER EDUCATION AND THE NEED FOR A MODERN TEACHER TO TEACH MODERN SCIENCE, AND (7) OTHER PROBLEMS IN SECONDARY SCHOOL SCIENCE EDUCATION INCLUDING PROVIDING FOR ABILITY LEVELS, AND DEVELOPING AND USING INSTRUCTIONAL AIDS. THIS DOCUMENT IS AVAILABLE FROM THE CENTER FOR APPLIED RESEARCH IN EDUCATION, 70 FIFTH AVENUE, NEW YORK, NEW YORK 10011. (DS)