A study is concerned with measuring the technical efficiency of a group of colleges affiliated to a university, using the DEA method. It was limited to three inputs (number of students, number of employees and number of teachers) and three outputs (number of conferences and seminars, number of published scientific research and number of graduates). The following table summarizes the inputs and outputs of each decision unit (university) during the academic year 2020-2021. Outputs Inputs number of number of DMU's number of published conferences number of number of number of Number graduates scientific and teachers employees students (college) research seminars 121 29 9 51 70 1623 61 16 3 62 80 1912 2 200 26 10 54 65 1875 72 18 5 71 75 2100 UI A 89 10 2 82 90 2988 The relative efficiency of college No. 4 is equal to