Get to know the ideas of pupils and their parents about the experimental comprehensive school system ( middenschool ). Questionnaire filled out by parents motives to send child to a comprehensive school / knowledge of comprehensive school / attitude towards the school at issue and the school-system in general / participation in school-life. Questionnaire filled out by pupils: wishes and expectations for future experiences in primary school / experiences in comprehensive school / motives to choose for comprehensive school / results of tests, marks, linguistic usage, silent reading, general knowledge. Background variables: basic characteristics/ occupation/employment/ education/ organizational membership