[1] Founded in 1983 by a group of Houston business and Episcopal Church leaders, the school opened its doors in the fall of 1984 to 150 students in grades nine and ten.

To introduce the school to Houston, the founders did extensive marketing via newspapers, television, and educational publications.

Warren R. "Jess" Borg, served until 1995, when Edward C. "Ned" Becker was appointed the second Head of School.

[3] After 15 years of fundraising, the campus debt was retired and a $42 million campaign for new buildings and endowment was initiated.

In 2001, the campaign ended with the construction of a new classroom building and library, a student center, a gymnasium, and a field house, track, and stadium complex.

The more than 30,000‑square‑foot building features a dining hall on the first floor with seating for 500, a renovated kitchen and servery, a small raised stage, drop‑down video screen, surround sound, Forrest Place coffee bar, and a glass‑walled art gallery.

The Academic Pillar prepares students for college with its curricula in English, mathematics, science, history, languages, religion, arts, and wellness.

[8] Episcopal's science department, utilizing the labs in the Jack T. Trotter Building, teaches students to analyze data and conduct experiments to better understand the physical world.

[12] Episcopal Football has had historic success under recently retired head coach Steve Leisz.

During his tenure, Leisz lead the Knights to 10 Southwest Preparatory Conference championship game appearances, winning 5 league titles in '09, '12, '14, '19, and '23 respectively.

The Financial Aid Program is open to students of any race, color, gender, creed, and national or ethnic origin.