This study purpose to describe implementation of computer-based national exam in SMAN 2 Banjarmasin and SMAN 1 Mandastana Barito Kuala on aspects of communication, resources, disposition, bureaucratic structure and its obstacles. The study method is descriptive qualitatif. The data collection techniques are observation, documentation and interview with some informant, so it can explain the research focus about the implementation of the computer-based national exam on aspects of communication, resources, disposition, bureaucratic structure and its obstacles. The study results on aspects of communication, resources, disposition and bureaucratic structure has been run based on SOP (Standar Operational Prosedure) of national exam the academic year 2017/2018 number 0044/P/BSNP/XI/2017 issued by BSNP referring to Ministerial Regulation No. 4 of 2018, however, the available resources are still considered inadequate. Especially means for the implementation of the computer-based national exam. Researcher suggests that the government should improve the facilities of the computered based national exam and its supporting, both at the central and in the region country, so the case of central server was down, power outages, and internet network problem is not happened again in the upcoming computer based national exam. IndexTerm: Implementation of computer-based national exam