The Association of Christian Schools International (ACSI) is the largest Protestant educational organization in the world. Since 1978, ACSI has advanced excellence in Christian schools by enhancing the professional and personal development of Christian educators and providing support functions for Christian schools.
Through a host of services, including teacher and administrator certification, school accreditation, legal/legislative help, and curriculum publishing, the association touches the lives of more than 5.5 million students worldwide. Along with a headquarters facility, ACSI has 28 offices in North America and around the globe. Nearly 24,000 schools from over 100 countries are members.