The author uses a theoretical account rooted in TEFL, language acquisition and educational psychology to provide the basis for the development of a comprehensive model of language learning in CLIL.It incorporates prior knowledge, EFL self-concept, interest in EFL classes, verbal cognitive abilities and contact to English. This model is used to estimate the effects of CLIL in the context of high-intensity programmes at German Gymnasien. The statistical evaluation of the quasi-experimental data from 1,000 learners proves the existence of large initial differences due to selection, preparation and class composition effects. After two years, one finds no significant effects of CLIL apart from a minor increase in self-concept, suggesting that the actual effects of CLIL have often been overestimated. Additional ISBNs 3631671296, 3631694164, 9783631671290, 9783631694169Evaluating Bilingual Education in Germany: CLIL Students General English Proficiency, EFL Self-Concept and Interest 1st Edition is written by Dominik Rumlich and published by Peter Lang Gmb H, Internationaler Verlag der Wissenschaften. ISBNs for Evaluating Bilingual Education in Germany are 9783631694152, 3631694156 and the print ISBNs are 9783631671290, 3631671296. Additional ISBNs include 3631671296, 3631694164, 9783631671290, 9783631694169.