Changing the language of instruction overnight can turn familiar subjects into unfamiliar lessons. Students must process new vocabulary and new content at the same time. A planned transition uses the language learners understand while deliberately building academic ability in the additional language.
Teachers can preview key concepts, compare terms, use visuals and gradually increase the new language as comprehension grows. Progress should be monitored in both subject knowledge and language. A transition does not take the same number of months for every learner; the pace depends on age, previous education and available support. A language bridge protects learning during transition. Regular checks let a school increase the additional language without losing sight of what students know in the subject.