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Japan, Tokyo
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English is the primary language of instruction for most subjects; the Programme of Inquiry is conducted in English. Japanese is taught from Preschool as the host country language, with additional Japanese language classes for non-native speakers. Approximately 60% of TWIS students speak Japanese as their first language, while the remaining 40% speak Korean, Hindi, Chinese, English, and other languages; more than half of students are English Language Learners. Mother tongue support is provided, and language level assessments (ISA) and language proficiency tests such as EIKEN and KANKEN are used to monitor progress.
Tokyo West International School provides bilingual education in English and Japanese. From Preschool onward, Japanese is taught as the host language, and English language and literacy are taught daily from Kindergarten through Elementary. The Programme of Inquiry is delivered in English, and most single subjects are taught in English. The Elementary environment is clearly bilingual, with English and Japanese used interchangeably, and mother tongue support is provided for non-native speakers.
Tokyo West International School (TWIS) is located in Hachioji in western Tokyo (Tama area) and welcomes children from PreK through High School. In PreK and Kindergarten, TWIS serves ages 2–5 and teaches in a primarily English setting while also offering Japanese learning time. In Elementary (Grades 1–6), classes are capped at about 18 students and learning is grounded in the IB Primary Years Programme (PYP), with subjects integrated through Units of Inquiry. A distinctive feature is the school’s garden-based learning, used for hands-on projects connected to sustainability. TWIS also describes a progressive AI education plan from Grade 6 to 12.
