At the time, he introduced the concepts of independent co-education, the primer program, and open-space education while the school grew from 62 students to 1,002.

On October 20, 1990, Governor Bill Clements declared Bernard Fulton Day “for his dedication to the education of young people in Dallas, in Texas, and in the nation.

"[1] From 1955 to 1959, State Representative Fred Agnich of Dallas was chairman of the board of the Greenhill School and was instrumental in the early development of the institution.

Its Band, Orchestra, Debate, Film, and Quiz Bowl programs have all garnered numerous state and national awards for their efforts.

The Student Council President (a senior) lights the Founder's Day Candle with the current longest working faculty member.

The Heart of the Hill program brings groups of students from each division—Lower, Middle and Upper—together to help instill a sense of community across the campus.

[8] Greenhill is a member of the Southwest Preparatory Conference which includes private schools from Texas and Oklahoma.

Students start playing athletics for the school when they enter the 7th grade and are able to participate in Basketball, Baseball, Cheerleading, Cross Country, Diving, Golf, Field Hockey, Football, Lacrosse, Soccer, Softball, Swimming, Tennis, Track and Field, and Volleyball.