Following the implementation of the new Curriculum 2005, outcomes-based education, professional development is one of South Africa's national goals in the continuing reform of its education system. Most school teachers are not familiar with teaching outcomes-based education and need training to be able to do so. Project UNIVEMALASHI, a district-level systemic reform initiative for teacher development has been successful in improving the content knowledge, skills and attitudes of 110 participating foundation phase (6-9 years) teachers during the first three years of its implementation. Data collected through classroom observation, questionnaire, surveys, and tests given to participating teachers revealed a positive impact of the project on teacher classroom practice. The essential components of the programme are described as a guide for delivering school-based professional development in outcomes-based education.