Considering students' voices and perspectives is indispensable in educational contexts. Therefore, instruments of measurement that are reliable and valid and can be used easily without complications are needed in schools. The Perceptions of Inclusion Questionnaire (PIQ) is a short instrument used to assess three central dimensions of inclusion,…

Previous research has repeatedly confirmed that students with special educational needs (SEN) are generally less accepted by their peers. Although inclusive teaching strategies and classroom characteristics are frequently hypothesised to improve students' social participation, empirical evidence is scarce. Therefore, the purpose of this paper is…

This brief examines Trends in International Mathematics and Science Study (TIMSS) science achievement of the 20% highest and the 20% lowest performing fourth and eighth graders in 11 countries. To do so, the authors compare achievement distributions across countries, using measures of relative equality within countries. Such an examination…

Previous research has shown that students with special educational needs (SEN) have fewer friendships than their peers without SEN. In this longitudinal study, 545 students from primary and secondary schools, including 106 students with SEN, were surveyed at the beginning and the end of the school year. The results show that students with SEN…

It is well-documented that academic achievement is associated with students' self-perceptions of their academic abilities, that is, their academic self-concepts. However, low-achieving students may apply self-protective strategies to maintain a favorable academic self-concept when evaluating their academic abilities. Consequently, the relation…

Early school leaving is a serious problem for individual students, especially for students with special educational needs (SEN). This study tests predictors of early school leaving, using data collected among 1,047 students from 60 inclusive and regular classes in primary and secondary schools in Austria with 4th- and 7th-grade students aged 9-11…

In 19 (sub)samples from seven countries (United States, Austria, Germany, Costa Rica, Ecuador, Vietnam, Brazil), we analyzed the impact of parental education compared with wealth on the cognitive ability of children (aged 4-22 years, total N = 15,297). The background of their families ranged from poor indigenous remote villagers to academic…