Archmere Academy is a private Catholic college preparatory school in Claymont, Delaware, United States. 514 students were enrolled for the 2020–21 academic year. The academy is co-educational and independent, though located within the Diocese of Wilmington.

Archmere Academy was founded in 1932 by the Norbertines, initially as an all-boys school. It began on the former estate of U.S. industrialist John J. Raskob, who lived there with his wife Helena and their 12 children until 1931. Raskob was the campaign manager for New York Governor Al Smith during his presidential campaign in 1928 and the home was used for many meetings, including those of the Democratic National Committee.

The estate was purchased by Bernard Pennings in 1932. He was the Abbot of the Norbertine Order and is attributed as the founder of St. Norbert College, a private Catholic liberal arts college located in De Pere, Wisconsin. The estate was purchased for $300,000 in the spring of 1932 and officially dedicated in the fall of 1932. The first year of operation, Archmere Academy had an enrollment of 22 students, 16 freshmen and 6 sophomores. In 1933 and 1934, enrollment grew to 50 students and 72 students respectively.

Archmere Academy began slowly expanding during the mid to late 1930s due to enrollment increases. Minor expansions were made to accommodate boarding students. In 1939 it built its first gymnasium and by 1940 it had converted the manor on the property into a science center. The school made a transition in the mid-1940s by where it became strictly a four-year college preparatory institution. It phased out both 7th and 8th grades during the 1946–47 and 1947-48 school years. It continued as a day school and boarding school for boys while its enrollment continued to increase.

In 1957, Archmere Academy celebrated its 25th anniversary with the groundbreaking for St. Norbert Hall, the school's main academic building, which was completed in 1959. Going into the 1960s, it continued to expand to accommodate the increase in enrollment, which had reached 394 students by the end of that decade. The Justin E. Diny Science Center was opened in 1973 with classrooms for physics, chemistry, biology, and environmental science. The old science center was turned into a center for the arts which held classes for the school's chorus, band, theater, and studio arts program.

The 1970s brought about two major changes for Archmere Academy. It moved away from being a boarding school and became a day school exclusively. In 1975 it also announced the decision to become a co-ed institution, enrolling 50 girls into the school. It was near the end of the 1970s that a board of trustees was for the academy, with the first meeting taking place in 1980. The board has been credited with expanding the curriculum and extracurricular activities at the academy as well as further expanding to accommodate the new programs. One expansion included a renovation of St. Norbert Hall which included an addition to the current building. Additional expansion in the early 1980s included a new auditorium that seated 750 people, as well as a new library constructed on campus.

In April 2001, an internal dispute among the Norbertines relating to the establishment of Claymont Priory separate from Daylesford Abbey spilled over into the administration of Archmere Academy. Interventions from alumni calmed the turmoil and resulted in the academy taking control of the former Raskob residence, known as "the Patio." 2003 marked the beginning of the academy's "building on mission & heritage" campaign that included goals to complete the Justin E. Diny Science Center expansion, the construction of a student life center, and renovations to the athletic field.

The school broke tradition with the installation of a non-Norbertine headmaster when Dr. Michael Marinelli, a 1976 graduate of Archmere Academy, took over at the beginning of 2010.

Towards the end of the 2015–16 academic school year, Archmere began massive renovations on Saint Norbert's Hall. This reconstruction made changes to the library and every room in the building.

Archmere
U.S. National Register of Historic Places
The Patio, country estate of John J. Raskob
Location	3600 Philadelphia Pike, Claymont, Delaware
Coordinates	39°48′08″N 75°27′13″W / 39.8023°N 75.4537°W / 39.8023; -75.4537
Area	15 acres (6.1 ha)
Architect	Harper, Alexander James; McCure, Clay
Architectural style	Renaissance, Italian Renaissance
NRHP reference No.	92001143
Added to NRHP	September 9, 1992 (32 years ago) (1992-09-09)

The Patio, one of the buildings of Archmere Academy, was built between 1916 and 1918 and was originally used as the country estate of John J. Raskob and his wife. Raskob was a financier, the developer of the Empire State Building, and a previous chairman for the Democratic National Committee. The name "Archmere" was given to the estate because of the natural arch of the trees formed over the Delaware River vista. The original building that Raskob constructed, also known as the Patio, was placed on the National Register of Historic Places in 2007. In 2009, the Delaware Public Archives dedicated Archmere Academy with a historical marker.

Archmere students are required to take courses in a variety of areas, including eight semesters of English, seven semesters of religion, and six semesters of mathematics, foreign language, history, and the sciences. Choices for elective classes include art, yearbook (which meets during class time), band, chorus, and computer courses.

Archmere offers a large number of AP courses, including Spanish, French, statistics, calculus (both AB and BC), physics, chemistry, biology, environmental science, art portfolio in 2-D and 3-D, computer science, English, composition, US history, European history, and world history.

The music program at Archmere Academy is an elective program that focuses on performance practices from the Renaissance to the 20th century including jazz and Broadway. Instruction is provided mostly through rehearsal experience although there is a course on music theory for advanced students as well as a songwriting course. Performing groups include the jazz ensemble, concert choir, stage band, and Mastersingers. The Mastersingers was founded in 1988 and consists of 30 students selected by audition at the beginning of the school year. In addition to performing at school liturgies and community concerts, they compete nationally and internationally. The academy also has a partnership that allows student musicians to study with the Serafin String Quartet.

Archmere competes in the Diamond State Conference for interscholastic sports such as American football, field hockey, basketball, rugby, soccer, swimming, diving, lacrosse, volleyball, golf, tennis, cheerleading, baseball, softball, cross country, track and field and wrestling.

Archmere's campus has two artificial turf fields (used by American football, M/W soccer, M/W lacrosse and field hockey), a baseball field (upgraded with dugouts), a softball field (upgraded with dugouts), six tennis courts and a running track.

Archmere has won a number of DIAA championships, such as cross country, volleyball and rugby. From 1991 to 2013, Archmere won eight XC championships and was runner-up for seven. The 2014 girls' volleyball team won the trophy following a victory over Charter. In the following year, Archmere volleyball once again went to the finals, but lost to Delaware Military Academy. The rugby team won three consecutive Delaware state titles in 2015, 2016, and 2017. The rugby team would win again in 2019, capturing the Mark Dombroski Cup and the Subaru 7's Regional Championship. The boys' soccer team won the school's first state title in soccer and the first DIAA state title since 2014. It went on to defeat Wilmington Friends 1–0, ending the season 17–1. The rugby team continued its dominance in the 2021 spring season. The A-side was undefeated for the entire season including winning the 2021 Delaware 7s state title against Salesianum 26–10. In 2023 the Archmere rugby team would win a thriller against Salesianum in overtime to win their 3rd title in 5 years.

In the 1960 season, Archmere's American football team broke a 12-year slide of losing seasons by finishing the season 8–0, led by star athlete Joe Biden, who later became the 46th President of the United States.

In the 2021 |merican football season, Archmere's varsity football team was undefeated, 13–0, winning district 2 and the class 2A State Championship. The JV team also went undefeated, with a record of 5–0.

In the 2022 Field Hockey season, Archmere's Varsity team advanced to the DII State Championship for the first time in 23 years. The Auks went 13–2 in the regular season. The team had a total of 5 all state players.

In the 2022-23 Girls Soccer Season, Archmere's varsity team won an amazing game against St. Marks defeating them 6–1 in the DII State Championship game. This team was the first girls soccer team to win the Championship in school history.

• Joe Biden (1961) – 46th President of the United States; 47th Vice President of the United States from 2009 to 2017; six-term United States Senator from Delaware from 1973 to 2009
• Colm Connolly (born 1964), Chief United States District Judge of the United States District Court for the District of Delaware
• Thomas Capano (1967) – former deputy attorney general of Delaware who was convicted of the 1996 murder of Anne Marie Fahey
• Dominic Pileggi (1975) – politician from Pennsylvania who served as Republican Leader of the Pennsylvania State Senate
• Stefan Roots, Mayor of Chester, Pennsylvania
• William H. Green (1979) – chemical engineer, MIT professor
• Mark T. Smith (1986) – painter known for his colorful, complex paintings
• Beau Biden (1987), former Delaware Attorney General; son of Joe Biden '61
• Hunter Biden (1988) – lawyer and lobbyist; son of Joe Biden '61
• Erin Arvedlund (1988) – financial journalist who has written for Barron's, The Wall Street Journal, the Moscow Times, The New York Times, TheStreet.com and Portfolio.com
• Meagan Miller (1992) – American soprano with an active international career in opera, recital and concert
• Tom Coyne (1993) – writer; associate professor of English at Saint Joseph's University
• Ashley Biden (1999) – activist, daughter of Joe Biden '61

• Official website