Trinity Christian School (TCS) is a private, classical Christian school located in Montville, in Morris County, in the U.S. state of New Jersey. Trinity Christian School includes elementary (K-6) and secondary (7-12) grades, offering education that is "biblically-based, academically excellent, and classical". The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 2015. It is a member of Association of Christian Schools International, Association of Classical and Christian Schools, New Jersey Christian School Association and the Metro Christian Athletic Association. As of the 2021–22 school year, the school had an enrollment of 153 students and 20 classroom teachers (on an FTE basis), for a student–teacher ratio of 7.7:1. The school's student body was 54.9% (84) White, 18.3% (19) Hispanic, 12.4% (19) Asian, 7.8% (12) Black and 6.5% (10) two or more races.