EN
The presented study explores the possibility of creating and implementing educational program which would reduce intergroup bias in realistic high school setting. The project was based on the assumption that there is the need of easily applicable, anti-prejudice intervention, which would be appropriate to introduce into foreign language course books, would be universal in terms of changing negative attitudes and would meet all methodological requirements of language lessons. Crossed categorization and the common ingroup identity model were used as theoretical basis for 30 English lesson scenarios on B2 level (upper-intermediate). It was shown that after the intervention there was a signifi cant change in the students’ attitude toward the outgroup and the outgroup members. The implications of these fi ndings are discussed.