The development of the digital world today has become a lifestyle that cannot be separated from technology. Hence, teachers are required to follow the development of existing technology in order to make learning process go well. The purpose of this research is to determine the performance of teachers in the digital era in planning, implementation and evaluation to improve the quality of learning. The research method used was qualitative research method with 12 informants as teacher representatives teaching at 12 State Senior High School in Kupang City -East Nusa Tenggara. The data was collected through interview and observation with triangulation data analysis techniques. The results of showed that teachers' performance in the digital era in improving learning quality are better. As a model by way of learning and teaching in the digital era, the teachers, among others (1) have the ability to collaborate with students, peers and communities in the use of digital sources.(2) Teachers have the ability to build networks and (3) have a sense of social responsibility. (4) Teachers have a discipline of time and are proficient in using technology. (5) Teachers are more at ease in preparing learning tools in the digital era. (6) Teachers are more creative and innovative in teaching and learning. Conclusion is Teacher Performance in planning, implementation and evaluation to improve the quality of learning has been running optimally.