Impact of “Content Language Integrated Learning” on English Proficiency of Students

By failing to appropriately control for selection effects, most previous research has overestimated the effects of Content and Language Integrated Learning (CLIL) on the development of students' foreign language skills. Furthermore, the CLIL-effect on the content subject is still widely unknown. Therefore, the present study investigated skill development of 80 Indian CLIL and non-CLIL eighth-graders in English and History controlling for a wide range of student, classroom and teacher characteristics. Results of multilevel modeling confirmed that CLIL-classrooms showed greater increases in English listening comprehension but not general English skills as measured by a C-test than non-CLIL-classrooms. In History, the increases in subject knowledge over one school year were comparable despite CLIL-students' larger amount of instruction (three instead of two hours per week). The results confirm previous, differential findings for English. For the content subject, they indicate that CLIL-classrooms need to invest substantially more time to achieve comparable learning outcomes.