Curriculum improvement is an ongoing process aimed at enhancing instruction based on student needs, involving various approaches such as behavioral, managerial, systems, academic, humanistic, and reconceptualist. Different levels of curriculum integration are identified, including departmentalized, reinforcement, complementary, webbed, and integrated learning, each fostering connections between subjects. The document outlines the importance of adapting curricula at macro, meso, micro, and nano levels to improve educational outcomes.