Sports Dedham High School participates in the
Tri-Valley League (TVL) of the
Massachusetts Interscholastic Athletic Association. Dedham High School joined the TVL for the 2017–18 school year, leaving behind the
Bay State Conference after 58 years of membership. They were previously invited to join in 2009, but declined the offer. Dedham's enrollment had shrunk to 719 during the 2015–16 school year, when the move was announced, nearly one-third the size of some larger schools in the Bay State Conference, such as Newton North, Framingham, and Weymouth. •
Fall • Cheerleading • Boys' cross country • Girls' cross country • Field hockey • Football • Golf • Boys' soccer • Girls' soccer • Volleyball •
Winter • Boys' basketball • Girls' basketball • Cheerleading • Boys' ice hockey • Girls' ice hockey • Boys' indoor track • Girls' indoor track • Swimming • Wrestling •
Spring • Baseball • Boys' lacrosse • Girls' lacrosse • Boys' outdoor track • Girls' outdoor track • Softball • Boys' tennis • Girls' tennis
Championships Dedham has had some sports success such as a D3 Wrestling state title in 2018 and 2026. The girls field hockey won several Tri Valley League and Bay State League titles in the 2000s, and also a state championship in 2003. Dedham football also went undefeated in the regular season in 1988 with a 10–0 record. In 2022, both the boys and girls varsity soccer teams played, but lost, in the state championships.
Thanksgiving Day football rivalry Dedham High School began playing Norwood High School in an annual football contest in 1920. As of 2023, Dedham has won 42 games, Norwood has won 50, and there have been two ties. Over the years, there have been several notable incidents. In 1946, thousands of fans swarmed the field for about 20 minutes after a Norwood touchdown pass was brought back on an offensive interference penalty. During the closing minutes of the game, the crowd threw stones and other objects at the officials. The
Dedham Police Department had to escort them off the field after the game. In 1956, seven boys from Norwood High School threw bottles of blue and white paint, the school colors, through the windows of
Dedham's School Department administration building to celebrate their team's win the day before. While they admitted to the paint, they denied being involved with the smashing of 22 windows at Dedham High School on Thanksgiving Day. Several days after the
assassination of John F. Kennedy, the 5th annual torchlight procession and rally was canceled the night before the game, but Dedham beat Norwood at home, 30–0.
Mascot As the town of Dedham is the seat of Norfolk County, the school's athletic teams informally used the name "Shiretowners" until 1968. In that year, students voted on a new name for the school's mascot. Senior Kenneth Martin proposed
the Marauders, after
Merrill's Marauders, which were immortalized in the
1962 film of the same name. The proposal beat two other finalists and an American Indian was chosen as the mascot. The name and the colors of crimson and gray were retained, but the logo changed to a pirate in 2007.
Stone Park Most teams play at Veteran's Memorial Field at Stone Park, which was rededicated on Thanksgiving Day, 2011, following a major upgrade and renovation. A new track and field was installed on the site in 2023, beginning shortly after the June commencement ceremonies; it was completed in the fall. It is also used by the
Pop Warner football program, the school band, and other students. The land where the stadium and school stand was originally donated by
Col. Eliphalet Stone. Stone deeded 49,897 sq. ft of land to the Dedham Improvement Society, an unincorporated organization, on June 2, 1884, to be used as a park. On January 2, 1895, Town Meeting took the property, per Stone's instructions, and purchased an adjoining parcel for from Louise M. Morse for $8,750, bringing the entire parcel up to 6.25 acres. It was later expanded again to 8.49 acres. Town Meeting appropriated $2,500 on September 16, 1895, and the land was graded and developed with a cinder track of .2 miles and a dressing house. The original land donated by Stone became a playground of 250' by 425'. In 1957, the
Great and General Court of Massachusetts passed laws allowing the town to use the land to build a new high school.
Personnel Tom Arria left the athletic director position in 2010 to take a similar job at a bigger school in
Nashua, New Hampshire. He was replaced by Michael Plansky, who left three years later to join a foundation with which he has family ties that assists veterans with addictions. Steve Traister, the current athletic director and director of health and physical education in the
Milton public school system, took over for Plansky in 2013.
Shad Araby was a passionate supporter of Dedham High School athletics and did not miss a football or basketball game in several decades. ==Co-curricular activities==