Xavier International School provides students with snacks and a full buffet-style lunch. The food is locally sourced and organic when possible. The cost of the food is included in the student's fees and is mandatory. Additionally, the school also provides boarding students with weekday breakfast and dinner, and three meals a day on weekends. The school is also equipped to cater to a wide variety of dietary needs and the menu and food policy is overseen by an operational team and a Food Committee consisting of students, staff, and parents.