Effecten en Didactiek van Tweetalig Voortgezet Onderwijs

This paper presents the results of a recently completed longitudinal evaluation study of Dutch-English bilingual programmes in Dutch pre-university education. During several years the outcomes of these programmes were measured in order to find out whether pupils in bilingual education gain higher levels of foreign language proficiency without any detrimental effects on their mother tongue proficiency and their achievements in other school subjects. Beside this, lessons were observed in order to investigate to what extent language teachers and teachers of other subjects display behaviour that can be said to stimulate second language acquisition.