International School of the Sacred Heart (ISSH) is a Kindergarten (co-ed) – Grades 1–12 (all girls) school in Shibuya, Tokyo, Japan, founded in 1908. As part of the Network of Sacred Heart Schools it is affiliated with schools and institutions in 44 countries. The International School of the Sacred Heart (ISSH) is a multicultural Catholic school. Kindergarten classes for 3, 4 and 5 year olds are for boys and girls, while grades 1–12 are for girls only. ISSH is located in the Hiroo neighborhood and was founded in 1908, belonging to a worldwide network of the Schools of the Sacred Heart.