EN
The aim of this investigations was to point out that for the teachers, who evaluate students aggressive behavior, the important is their membership of the group category (the In-group vs the Out-group; the Conventional-group vs Unconventional-group). It was assumed: 1) the effect of the in group favoritism will not occur, 2) teachers evaluating student’s aggressive behavior of different social category will be guided by different standards. The investigations were performed in Kielce, in six schools (primary school, gymnasium and secondary school) and 112 teachers participated in this studies. The results show than the lack of effect of the in-group favoritism where there is a necessity to punish the aggressive behavior of student and in the level of punishment. Moreover, 1) the teachers have more intensity of the need for punishment student the Unconventional than the Conventional, 2) the normative standards are more important for teachers evaluating students aggressive behavior for In-group vs Out-group, but in the Unconventional – group vs Conventional group the allo-egocentric standards were preferred.