Among the various existing methods used in teachers’ evaluation, one of the most used is the survey of the students themselves. This method may have incomplete (paracompleteness), conflicting or inaccurate results as they often deal often with subjective and contradictory opinions. This work presents a case study using a non-classical logic, to analyze these conflicting views. The Paraconsistent Annotated Evidential Eτ Logic proves to be helpful in the analysis of these data types in order to see more clearly the items that should be improved.