This chapter outlines the impact of Thailand's switch from a content-based curriculum to a modern standards-based approach in 2001 and its revision in 2008. This should be better communicated to schools and education staff supported in the implementation of curriculum reform. The content of each discipline or subject is traditionally described in terms of skills, knowledge and attitudes. More recently, other elements such as cross-curriculum themes, key competencies and values have been added to this simple subject-based paradigm.