This article shows new forms to study the results of students and schools in the ICFES exam. Recognizing the criticisms of different publications where are compared the schools according to their average score, an analysis of aggregate value is proposed, which keeps in mind in an explicit way the differences in the socioeconomic status of the students and its families, to understand of fairly the academic results. The kindness of this technique for effects of the diagnosis and design of strategies of improvement is shown, so much to level of the schools as to the inside of them, to explore the results of each one of its students.