With the advancement of human science and technology, the continuous increase in the construction and functional improvement of campus buildings and school teaching infrastructure cannot avoid adverse impacts on the overall environment. Therefore, sustainability assessments of buildings are indispensable for the sustainable development of the surrounding region. The main goal of the sustainable design of campus buildings is to reduce the depletion of key resources, such as water and energy, as well as to lower carbon emissions; this, in turn, creates a safe and effective campus environment. Comprehensive assessments of campus buildings have become critical to achieving national and regional sustainability. Therefore, this study compiles a set of building construction indicators suitable for a framework for high school campus architecture and ecological development in Taiwan, conforms these indicators to climatic characteristics, and considers an evaluation model for sustainable building concepts. This research uses the Fuzzy Delphi Method (FDM) and the Fuzzy Analysis Hierarchical Procedure Method (FAHP) to gather data using expert questionnaires. We examine three relevant factors: (1) the main factor, campus space architecture, is the most important measure of sustainable buildings; (2) the second factor is the campus ecological environment; (3) the third measure of the sustainable campus buildings is a healthy environment. The top 20 elements of the sustainable campus building evaluation index were obtained through FAHP analysis, with an overall cumulative weight value of 81.06%. This research may provide a resource allocation reference for government bodies or the construction industry, assisting them in building sustainable buildings in the future.