- The aim of this research was to develop a network of mathematics and science senior high school education in provincial administrative organization of Nakhon Ratchasima’ school in order to enrich the student academic achievement towards mathematics and science teaching by using instructional media as a network building tool. The results showed that twenty-two instructional media were developed towards mathematics, physics, chemistry, and biology (n = 6, 8, 1, and 7, respectively). The percentage of instructional media developed towards mathematics, physics, chemistry, and biology that reached standard level was 83, 75, 50, and 86, respectively. Most of instructional media significantly improved (p < 0.05) student academic post-achievement when compared with pre-achievement and the student satisfaction towards teaching was highly positive. By using these instructional media as a network building tool, 58 senior high school education teachers from 25 schools were connected. In addition, it also created a network between senior high school education teachers and higher education commission instructors within Nakhon Ratchasima for at least 30 instructors.