The effectiveness of education depends on the competence and teaching quality of a teacher. Existing practices in teaching must be revolutionized and other solutions must be introduced to ensure that quality continues to increase instead of remaining stagnant. This conceptual paper aims to explain the Six Sigma approach in education through the Six Sigma DMAIC model to improve the quality of teacher teaching. The Six Sigma DMAIC model cycle consists of five phases: Define, Measure, Analyze, Improve, and Control. The development of the Six Sigma DMAIC model's corpus of knowledge helps teachers improve the quality of teaching in the classroom and meet the needs of students. The new concept of the Six Sigma DMAIC model implementation in education also works through an in-depth diagnosis of issues related to teaching problems, which simultaneously facilitates the planning of effective interventions. Besides, the concept of sigma in the technical field has the potential to be developed in the field of education. The current findings provide a dimension of innovation in the education sector in improving the quality of teacher teaching using the Six Sigma DMAIC model, which will have a significant impact on the academic success of students. Therefore, education policymakers should be more aggressive in strengthening the quality of education towards the success of quality and dynamic human capital through the latest practices with the sigma concept.