The effects of Content and Language Integrated Learning (CLIL) on students' foreign language skill development have been overestimated by previous studies, as most studies needed to have considered selection and preparation effects appropriately. We used complete survey data from a 1996-2003 cohort to investigate English skill development of N =…

English learner (EL) children (i.e., children learning English as a second language) constitute one of the fastest growing, yet disproportionately underachieving, segments of the U.S. public-school population. A main difficulty that ELs face at school is learning English and content-area knowledge in tandem. Low levels of English proficiency may…

However influential the interdependence hypothesis has become in bilingual research, it still lacks full empirical support. This longitudinal study explores the parallels in the biliteracy development (L1 Spanish and L2 English) of 20 students in a European immersion programme (i.e. CLIL) over a two-year period. A bilingual learner corpus of…