Education systems can be centralised or decentralized. When an education system is centralised, broad policies, regulations, guidelines and procedures are centrally determined. As a result, school based interpretation of the policies, regulations, guidelines, and procedures become crucial. Successful curriculum implementation therefore depends to a large extent on the teachers. As the key actors in curriculum implementation, teachers know what works best in the teaching and learning process. This then calls for high teacher participation in school based interpretation of the guiding frameworks. In this book an investigation into teacher involvement in curriculum implementation decisions at primary school level is presented. The findings revealed gaps in teacher involvement and recommendations point towards the need for deliberate full engagement of teachers since they are key implementers of the curriculum.