Students’ psychological well-being and its multilevel relationship with immigrant background, gender, socioeconomic status, achievement, and class size
School situations trigger affective states that influence students’ achievement and well-being. In the present study, we investigated, on the basis of a sample of 26,470 high-school students and 1,472 classrooms, the relationship of individual characteristics (immigrant background, gender, socioeconomic status, and achievement) as well as classroom characteristics (group composition and size) with students’ feelings at school.