Curriculum change refers to a whole set of concepts, including innovation, development, and adoption. It encompasses both planned and unplanned changes and can occur at the level of the classroom, school, or whole education system. Teachers may find that changes accompany their teaching from time to time. In fact, curriculum change particularly involves teachers, schools, and the community. It is expected that the associated changes are instrumental in enhancing the professional growth of both the teachers and schools involved. Changes in the curriculum thereby are assumed to be a complicated process which can be influenced by a number of factors. Apart from giving an account of the basic concepts of change and curriculum implementation, this chapter also identifies various models of change and some strategies of curriculum implementation. It then proceeds with the critical reflections on the major obstacles and complexities of curriculum implementation, and finally the multitudes of efforts made by the local government, the community, schools, and teachers in curriculum implementation are appreciated.