Calexico Mission Academy is a school under the control of the Southeastern California Conference of the Seventh-day Adventist Church. It is a part of the Seventh-day Adventist education system, the world's second largest Christian school system. It is located in Calexico, California, United States, and has just approximately 300 students in the KâÂÂ12 levels, most of whom are from the neighbouring city of Mexicali, Mexico.