Association of Christian Schools International
Education Administration ProgramsColorado, United States201-500 Employees
The Association of Christian Schools International (ACSI) is the largest Protestant educational organization in the world, focused on education administration within Christian schooling. Based in Colorado Springs, Colorado, it has operated as a religious nonprofit since 1978. The organization provides professional development and support services to Christian schools, including teacher and administrator certification, school accreditation, legal and legislative assistance, and textbook publishing. Through a global network, ACSI serves more than 5.5 million students across more than 100 countries, with a headquarters facility and 25 regional offices. ACSI's activities span a broad international client base of member schools that collaborate to maintain standards and resources for Christian education. In March 2026, Temple Weiss was named President of the ACSI Education Foundation, to lead initiatives such as the Federal Tax Credit work through its Children's Tuition Fund.