This dataset contains effect size estimates of the relationship between terrorism and political attitudes derived from 241 manuscript, which together account for 326 unique studies conducted between 1985 and 2020 among more than 400,000 respondents from approximately 30 countries.

This dataset combines linked surveys of students and teachers from 60 secondary schools across Flanders. It measures how teachers engage with societal issues and increasing religious and cultural diversity in the classroom, alongside students’ perceptions and attitudes toward these issues. Its multilevel structure enables the study of how individual attitudes vary across educational contexts and can be further enriched with school-level characteristics.