The training aims at improving the capability of the training participants -teachers -for teaching Geography Information System by (1) giving information and introduction about the process in implementing SIG for the teachers of senior high schools (SMA/MA). (2) Demonstrating how to operate the technology of geography information system and (3) socializing the existence and technological implementation system of SIG. the methods used are speech, discussion, peer teaching and practice. The place to practice it is in the laboratory of Geography faculty of UMS. The participants are allowed to operate hardware and software of SIG. The result of pretest by using questioner and brainstorming shows that most of the participants master SIG in cognitive domain in comprehension level for the theory of SIG, while for its operation; they are in perception level of psychomotor domain. At the end of the training, the participants show that there is the change of comprehension about the theory of SIG from cognitive level to implementation level, whereas in the operation of SIG, the change is from perception level to implementation with guidance. The result of training is supplemented by the response of the participants which is appropriate to the target score. The response of the task of identification is the use of map and SIG in teaching Geography which finds that teaching Geography in senior high schools (SMA/MA) is directed to 3 targets: 1. analyzing the impulse of physical nature and the development of the shape of the earth and its reservation. 2. Evaluating social impulse in the earth and its interaction as well as its effect to our life and 3. Using the concept of region and graphic in understanding location, design, distribution and the relationship among the objects involved the specification for industry.Kata kunci: Sistem Informasi Geografi (SIG), pelatihan guru SMA/MA.