@misc{Sitek_Michał_Changes,
 author={Sitek, Michał},
 howpublished={online},
 publisher={Educational Research Institute},
 language={pol},
 type={article},
 title={Changes in educational inequalities in Poland. A polemic against the aricle of Zbigniew Sawiński „Gimnazja wobec nierówności społecznych” („Polish lower secondary schools in the face of social inequalities”)},
 keywords={research on student achievement, educational inequalities, school selection, social origin, educational pathways},
}