Garnet Valley School District
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The Garnet Valley Joint School System was formally organized on March 30, 1959. From school year '59-'60 to school year '62-'63 Garnet Valley existed as a Junior High School housed in the Old Concord Elementary School building on Bethel Road for Grades 7 through 9. Students were then sent to Media High School for Grades 10, 11, & 12. The last class sent to Media High School was the Class of 1965. The construction of the Garnet Valley High School began in May 1962, and opened on September 4, 1963. The first class to graduate from Garnet Valley High School was the Class of 1966.
In 1990, construction began for Garnet Valley Middle School. In September 1991, Garnet Valley Middle School was opened.
In 2000, the Garnet Valley Middle School was selected as a Blue Ribbon School of Excellence by the United States Department of Education  In both 1999 and 2001 Garnet Valley High School received the Blue Ribbon Award of Excellence from the Pennsylvania Department of Education.
Student scores on the Pennsylvania standardized tests (SATs) rank the district in the top 7% of all school districts in the state of Pennsylvania.
As of the 2007–2008 school year, all students attend Concord Elementary School for kindergarten. Those who live in Concord Township attend Concord Elementary (grades K–2), then go to Garnet Valley Elementary School (grades 3–5). Bethel Springs Elementary School (grades 1–5) is for students who live in Bethel Township. All students attend Garnet Valley Middle School (grades 6–8), and complete their education at Garnet Valley High School (grades 9–12).
Garnet Valley continues to expand. In September 1997, Garnet Valley Elementary School opened. In September 2002, Bethel Springs Elementary School opened. In September 2000 and September 2001, due to the exponential student growth throughout the school district, the middle school completed a renovation which included the expansion of the art and technology wing and cafeteria, the construction of a new gymnasium and choral room, the relocation of the front offices, and the construction of 13 general education classrooms and 2 science labs. In November 2005, due to a shortage of classrooms, the middle school opened a new wing that consists of 12 general education classrooms and 2 science labs. In January 2003, due to the same exponential student growth throughout the school district, the high school completed phase 1 of a major renovation which included the expansion of the core facilities, the construction of a performing arts center and art wing, and the construction of a general education wing that was designed to accept a second floor. In September 2006, the high school completed phase 2 which was the construction of the second floor for the new general education wing. Concord Elementary School was rebuilt in a new location and opened in September 2006. In October 2016, the middle school cafeteria was renovated for the second time due to overcrowding in the old cafeteria. 
In 2007, Garnet Valley High School football team won the PIAA District 1 Championship (AAA) for the second consecutive year and won the Eastern Pennsylvania Championships, eventually losing the state championship to Thomas Jefferson High School (AAA). The Garnet Valley football team was up leveled to AAAA in 2008. In fall 2008, 2011, and 2013 the football team won the Central League title, and won a share of the 2009 title with Ridley High School.
Schools within the district
|Garnet Valley High School||1963 September 4||9–12||Website|
|Garnet Valley Middle School||1991 September 4||6–8||Website|
|Garnet Valley Elementary School||1997 September 3||3–5||Website|
|Bethel Springs Elementary School||2002 September 4||1–5||Website|
|Concord Elementary School||2006 September 6||K–2||Website|
|Concord Elementary School||1949||2006|
|Francis Harvey Green School||1952||1991|
Both Francis Harvey Green School and Concord Elementary School were leased to the Delaware County Intermediate Unit for special education, in 1991 and 2006 respectively.
Concord Elementary School was relocated to a new building on Station Road, Glen Mills in September 2006 and the old school building, on Bethel Road, was renamed Pennington School. Pennington School is currently leased by the district to the Delaware County Intermediate Unit for the education of special-needs children.
Francis Harvey Green School was demolished in November 2010.
- 1964-1972 : Bennett H. Davis
- 1972-1980 : Henry F. Hofmann
- 1980-1987 : William Byrd
- 1987-1991 : Vemon R. Wyland
- 1991-2010 : Anthony V. Costello
- 2010-2012 : Michael L. Christian
- 2012-2012 : Anthony V. Costello (acting)
- 2012–present : Marc Bertrando
- "Blue Ribbon Schools Program" (PDF). United States Department of Education. Archived from the original (PDF) on 2009-03-26. Retrieved 2006-08-07.
- "Voices of the Valley - District Newsletter" (Webpage). Garnet Valley School District. Retrieved 2017-04-08.
- "Concord Elementary School on Bethel Road to be Renamed Pennington School in Summer 2006". Garnet Valley School District. Archived from the original on 2006-06-14. Retrieved 2006-01-27.
- "Garnet Valley School District General Fund Budget Summary - Fiscal Year: 06/07". Garnet Valley School District. Archived from the original on 2007-09-27. Retrieved 2007-04-30.