Reorienting teacher education should be placed at the heart of reorienting education towards sustainable development. This requires that teacher education institutes reorient and redefine their outcome standards as well as redesign their training programs accordingly to incorporate and implement Education for Sustainable Development (ESD). Although many efforts have been made to promote ESD in teacher training, little information is available regarding to what extent ESD is integrated in teacher training programs or curricula. This study examines how ESD is incorporated in teacher training programs in terms of learning content, learning outcomes and didactic approach, through analyzing 429 course syllabi offered by the Hanoi National University of Education (HNUE) in Vietnam. HNUE training programs were found to contain some elements of ESD but they lack coherence or systematic inclusion. The results suggest needed strategic changes at organizational (university) and individual (instructor) levels to improve ESD in teacher education. This paper contributes to the discussion on the implementation of a holistic curricular assessment approach for three aspects of ESD (learning content, learning outcomes and didactic approach) and highlights the ongoing need for improving curricular assessment strategies for sustainability.