This study examines ways to enhance elementary school teacher’s expertise in securing minimum academic competencies for all students. To achieve this aim, the study conducted concept mapping through interviews for 15 elementary school teachers. As a result, study participants perceived measures to strengthen teacher s expertise to improve minimum academic competencies in terms of ‘teacher education-teacher support’ and ‘teacher expertise-system and policy.’ Measures to enhance teachers expertise to improve minimum academic competencies recognized by participants in the study could be grouped into five clusters. Listed in order of importance, these groups were ‘Understanding Underachieving Students and Appropriate Guidance Methods,’ ‘Training Content and Methods,’ ‘Policy and Institutional Aspects of Minimum Academic Competencies,’ ‘Understanding the Curriculum and Supporting Class Instruction,’ and ‘Nurturing Teachers Related to Minimum Academic Competencies.’ Specific measures for enhancing expertise were drawn for each cluster, and based on this, suggestions were made for future policies for minimum academic competencies.