In this talk, Judith Woodfield reflects on evidence collected in three schools (Tile Wood, Chenderit and Bordesley Green Girls School). Her data suggest that CLIL helps schools to achieve higher Ebacc outcomes, through improvement in MFL but also through transferrable learning strategies which then particularly improve attainment in problem solving subjects such as History and Science. CLIL can be used successfully in single sex, mixed and disadvantaged settings with equal success. Girls make quicker gains than boys but students of all abilities make greater progress in both MFL and other problem solving based subjects than they do in non CLIL cohorts. Judith also shares tips from her own experience on how to implement a CLIL programme at module and school level.