This study concerning students of first university year has two main purposes: Using results of the checking in the middle of the year, it aims to set, in the first place, a model for determining a confidence interval for academic performance and, in the second place, an indicator of academic success at the end of the year. These tools will help the students of first university year to estimate their own performance. This will allow a better utilisation and efficiency of the pedagogic assistance device worked out by University.