Translate the following English sentence to French:
"First of all, that of evaluation as an instrument to improve quality - the aim of which is not to establish who is top and who is bottom of the class, but rather simply to act as an incentive so that everyone ends up at the top of the class."
Premièrement, l'évaluation comme instrument d'amélioration de la qualité, le but n'étant pas de définir qui est le premier et qui est le dernier de la classe, mais simplement de stimuler pour que tous deviennent premiers de la classe.