This questionnaire module contains questions on: characteristics of childcare institution and group; childcare from age 0 to 6 (institutional childcare, private arrangements); extracurricular activities (e.g., early music education, drawing, etc.); history of education and graduation: skipping/repeating a grade; kindergarten (structure, concept); parental report: extracurricular activities (e.g., help with homework, remedial groups, leisure activites, etc.); recommendation for secondary education; twins in same childcare institution; twins in same institution or school; type of education / training; current status of education / qualification.