[1][2] In 1987 the vestry of Truro Anglican Church voted unanimously to found Trinity Christian School, with Dr. J.C. Lasmanis named as its first headmaster.

[citation needed] Trinity opened its doors to a total of forty-one students from first through third grade, each taught by three faculty members in classrooms provided by Truro.

[citation needed] During Mr. Beavers' time in office: a 4th and 5th grade was added, a middle and upper school was established, enrollment greatly increased, and the faculty grew.

After two years of hard fundraising Trinity proudly opened the doors to its new 25-acre campus facility, located in Fairfax off of Braddock Road next to George Mason University.

After much deliberation, the Trinity Christian board of trustees appointed then-teacher Dr. David Vanderpoel as the school's fourth headmaster.

Complete with a gymnasium with bleacher seating for 900, a performing arts stage and adjoining wing, a weight room, and additional science labs made up the building.

[citation needed] Expansion of the student body continued and in 2019 the school purchased a 29-acre piece of land a mile away on Shirley Gate Road.