Myrtle Beach High School originally shared a facility with all the lower grades in Myrtle Beach's public schools in a building occupying a city block bounded by N. Kings Highway, Oak Street, 5th Avenue North, and 6th Avenue North. In middle of the 1946-47 school year, a fire destroyed the school building; classes for the remainder of the school year were held in The Seaside Inn, which occupied the plot of land which the Myrtle Beach Pavilion amusement park was eventually built. Shortly after the fire, Myrtle Beach High School was rebuilt on a tract of land west of North Kings's Highway, northwest of the present intersection of U.S. 17 Business and 14th Avenue North in Myrtle Beach. In 1965, MBHS was one of the first public schools in its area to integrate both black and white students. 1990, the school building and athletic fields were sold by Horry County Schools and was redeveloped to the Kings Festival shopping center. MBHS was relocated to its present site on Robert Grissom Parkway between 29th and 38th Avenues North.
The Seahawks have won many state championships in school history, including: Football: 1980, 1981, 1983, 1984, 2008, 2010, 2013 and 2018 Boys Basketball: 1965, 1987, 2002, and 2008. Girls Basketball: 1948, 1964, 1986, 1997, 2001, 2010, and 2011. Boys Golf: 1981, 1992, 2001 and 2002. Boys Tennis: 1979, 1999, 2001, 2002, 2003, 2006, 2007, 2008, 2009 and 2019. Girls Tennis: 1984, 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2001, 2002, 2004, 2005, 2014 and 2015. Volleyball: 2017
Bands
Myrtle Beach High School has a concert band and marching band. The marching band performs at home football games and competes at area competitions. The Seahawk sounds has taken a total of 17 trophies throughout 2015's season, including Second place in Drum Major and Guard, third place in Drum Line and Horn Line, third place in class. 1st Place in Drum Major, Drum Line, Guard, General Effect and Music. 2nd place Marching. 1st Place in Class A. 1st place in Colorguard, Drum Line, Drum Major, Horn Line, and First Place in Class A. Earning the highest scores since the relaunch in 2011.
Theatre Arts
Myrtle Beach High School offers multiple Theatre courses including Drama I, II, III, and IV alongside Technical Theatre coursework where students learn stage lighting, sound, set construction, costuming, and makeup. The MBHS Performing Arts compete in the All County Theatre Festival in the fall and put on a major production in the spring. The current theatre director is Hunter Rigsby. MBHS theatre recently launched their performing arts website where theatre goers may keep up with the happenings at Myrtle Beach High School and will soon offer online ticketing.
NJROTC
Seahawks Cadet Corps have been in existence since 1994. The unit competes in Academic, Drill, Rifle, Color Guard and Orienteering competitions throughout both North and South Carolina. In 2016, Myrtle Beach NJROTC was recognized by the Navy League as the Most Improved Unit in the entire United States. Received Distinguished Unit w/Academic Honors in 2016 and 2017, Unit Achievement in 2015, Unit Achievement 2009, Unit Achievement 2007, Distinguished Unit in 2006, Unit Achievement 2005. Myrtle Beach Highschool Chain of Command 2017.
