Often objective tests to evaluate student qualifications are used. However, the selection between different evaluation criteria is in the hands of teachers or evaluators preferences. This investigation offers, briefly, a revision of some strategies utilized for objective evaluation. We also present other alternative strategies to the most classical ones. Afterwards, the strategies of evaluation have been analized with data from 114 subjects, who were evaluated with a test. The results suggest there are two kinds of strategies, one where only students' performance are evaluated, and other, where the test and the students are evaluated at the same time. We also show the fail of concordance between the indicators used