@misc{Sawiński_Zbigniew_Polish,
 author={Sawiński, Zbigniew},
 howpublished={online},
 publisher={Educational Research Institute},
 language={pol},
 type={article},
 title={Polish lower secondary schools in the face of social inequalities},
 keywords={social inequality, inequality in education, persistent inequality, school reform, lower secondary schools, PISA},
}