Nagoya International School (NIS) is a private non-sectarian day school in Nagoya, Japan. Instruction is in English. The co-educational school serves students in preschool through high school. Graduates earn a standard NIS diploma or an International Baccalaureate diploma. Nagoya International School was opened in 1964 partly in response to the demand for English-language instruction post World War II. The curriculum of Nagoya International School was initially based on the curriculum of American schools, but, over the years, the curriculum has been redesigned to be more international. The school is open to students of all backgrounds who can demonstrate the ability to succeed in an English-language school.