-This research was conducted to identify and evaluate the relative importance of the criteria in an archaeological building. Open and closed questionnaires were used and interviews with experts and specialists from many ministries and governorates were conducted to identify the most important criteria. The aim determines what factors influence historic archaeological building success, and which criteria should be used to determine the best response. The data were analyzed with the SPSS V25 program using the Relative Importance Index (RII) method to determine the relative importance of the considered 15 variables. RII allows the identification of the most important criteria based on responses from participants, and it is a useful tool for prioritizing indicators rated on Likert-type scales. The data were analyzed using a formula from a previous study's relative index analysis method. Providing information or a database of historic old buildings ranked first with RII = 92%, and providing information on the changes taking place in old buildings ranked second with RII = 88%.

The current study analyzes historic educational buildings to discover the optimum combination of improvements for optimal energy cost. The analysis was conducted using BIM technology and associated programs such as Auto Desk Revit 2020 and Auto Desk Insight 360 to determine the optimal strategies by which the most applicable alternative construction materials and procedures are considered to obtain environmentally and economically sustainable old educational buildings. The analysis showed that several approaches may reduce the cost of electrical energy usage and generator fuel in aged schools. Optimal changes lead to such reductions. Altering wall and roof materials minimizes electrical energy usage. The findings reveal that altering the lighting efficiency (0.3 W/sf) in the best way decreases the cost of electrical energy consumption by about 65,575,500 Iraqi Dinars (ID), and reduces the cost of fuel energy consumption by approximately 510,000 ID.