In improving the quality of efficiency and effectiveness in educational organizations, it is necessary to carry out long-term strategic planning of information systems and information technology (IS/IT) that are appropriate to support performance and productivity in an educational institution. SMAN 3 TBT is a school that utilizes/uses IS/IT in the process of supporting its operations. However, this school is one of the senior high schools that has not fully implemented and utilized IS/IT architectural planning in its business processes. In general, it is still run manually or only utilizes Microsoft Office and Google/Internet in its business processes, so there is no data integration and it is less efficient. Therefore, it is necessary to have a strategic plan in designing an enterprise architecture that can harmonize the development of information systems and existing information technology with the organization's business processes at SMAN 3 TBT. TOGAF ADM for its Enterprise Architecture, which contains the stages from the preliminary phase to migration planning, is the framework chosen for this research. Blueprints for IS/IT strategic planning including business architecture, data architecture, application architecture, technology architecture, and recommended technological advances, are the results/outputs of this research. Kata kunci— TOGAF ADM, framework, arsitektur enterprice, proses bisnis