Teacher performance shows a teacher's ability to do his job properly. Given the importance of teacher performance in determining the quality of students, teacher performance must be improved. This research aims to find feasibility and effectiveness of implementing the AKBIR model in improving elementary school teacher performance. The AKBIR model is a model built on a theory that states that the factors of trustworthiness, commitment, knowledge sharing, innovation, and reflective action can influence teacher performance. The research methodology is research and development through the ADDIE approach, namely start by need analysis and model design, development, implementation of model, and evaluation). The trials were conducted twice with 100 elementary school teachers. The research results show that: a) the AKBIR model has characteristics that are purposed, result-analyzed, holistic, and tool-supported; b) the AKBIR model is very feasible to use; c) the AKBIR model is very effective in improving the performance of elementary school teachers. Novelty: a quality model developed from the factors of trust, commitment, knowledge sharing, innovation, and reflective action that is proven to be able to improve the elementary school teachers' performance.