Xavier School (simplified Chinese: 光启学校; traditional Chinese: 光啓學校; pinyin: Guāngqǐ Xúexìao; Pe̍h-ōe-jī: Kong-khé Ha̍k-hāu; also referred to by its acronym XS) is a private, Catholic, college preparatory school run by the Philippine Province of the Society of Jesus. Its main campus is at 64 Xavier Street, Greenhills, San Juan, Metro Manila, Philippines. It has a southern satellite campus along West Conservation Avenue in Nuvali, Canlubang, Calamba, Laguna mainly aimed to serve financially challenged students. It is a K-12 school with a curriculum that includes a mandatory Chinese language program. It also offers an optional International Baccalaureate program in grades 11 and 12 to interested students.