Mainland Regional High School is a regional public high school and school district serving students in grades nine through twelve from the communities of Linwood, Northfield and Somers Point in Atlantic County, in the U.S. state of New Jersey, serving a total population of over 25,000 in the three communities.Shott, Meghan. "Mainland Regional High School", SouthJersey.com, February 23, 2015. Accessed January 26, 2025. "Mainland Regional High School is a regional public high school serving students from the communities of Linwood, Northfield and Somers Point in Atlantic County."One Family, One School, One Community, Mainland Regional High School. Accessed January 26, 2025. "The Mainland Regional High School District is a comprehensive, four-year public high school with an enrollment of approximately 1,300 students serving the communities of Somers Point, Northfield and Linwood, New Jersey. The District also participates in school choice, which permits 44 students that reside outside of the sending districts to attend Mainland Regional High School." The high school is located in Linwood. The school is the only facility of the Mainland Regional High School District.Public School Directory 2024–2025, Atlantic County, New Jersey. Accessed January 1, 2025.School Performance Reports for the Mainalnd Regional High School District, New Jersey Department of Education. Accessed April 3, 2024.New Jersey School Directory for the Mainland Regional High School District, New Jersey Department of Education. Accessed February 1, 2024.

As of the 2024–25 school year, the school had an enrollment of 1,160 students and 95.6 classroom teachers (on an FTE basis), for a student–teacher ratio of 12.1:1. There were 268 students (23.1% of enrollment) eligible for free lunch and 41 (3.5% of students) eligible for reduced-cost lunch.School data for Mainland Regional High School, National Center for Education Statistics. Accessed January 15, 2026.

The school is fully accredited by the New Jersey Department of Education.

The district participates in the Interdistrict Public School Choice Program, which allows non-resident students to attend school in the district at no cost to their parents, with tuition covered by the resident district.List of Choice Districts: Choice Program Profiles for 2025-2026 School Year, New Jersey Department of Education. Accessed January 1, 2025.

History In December 1958, a plan for a $2.1 million (equivalent to $ million in ) school building was cut to $1.5 million after a review of the proposal by a pair of state agencies."State Chops Shore School Bond Issue", Courier-Post, December 3, 1958. Accessed April 25, 2022, via Newspapers.com. "The Mainland Regional High School District must cut the cost of a proposed new school from $2,100,000 to $1,500,000. The school district has been advised that the state Department of Local Government and the state Municipal Finance Commission have vetoed a bond issue in the larger amount, but will approve a $1,500,000 issue: The board immediately canceled a special election scheduled for Jan. 6 on the $2,100,000 bond issue, to pay for a school planned to serve the communities of Somers Point, Linwood and Northfield."

In September 1959, the three constituent districts were notified by the Ocean City School District that overcrowding would mean that it would no longer be able to continue accepting students from the communities at Ocean City High School starting in the 1959-60 school year."Ramblin' Round", Millville Daily Republican, September 21, 1957. Accessed April 25, 2022, via Newspapers.com. "The board had already notified Somers Point, Linwood and Northfield to establish a regional high school as Ocean City will cease admitting students from those communities to Ocean City High School in 1959. Residents or these places have accepted plans for such a school and the next move is to hold a special election on the question."

The school opened for the 1961-62 school year, with rising seniors from Linwood and Somers Point given the option to complete their schooling at Ocean City High School and those from Northfield to finish up at Pleasantville High School.Castaldi, Skip. "Mainland Memories", Tom William Sports, July 21, 2021. Accessed April 25, 2022. "It is late August of 1961 and Mainland Regional High School is about to open as a new school. As a result, Somers Point and Linwood students will no longer attend Ocean City High School. Northfield students will no longer attend Pleasantville High School.... Incoming seniors were giving a choice, they could stay at Ocean City High, Pleasantville High or attend Mainland Regional. The vast majority choose Mainland."

The district had been classified by the New Jersey Department of Education as being in District Factor Group "DE", the fifth-highest of eight groupings. District Factor Groups organize districts statewide to allow comparison by common socioeconomic characteristics of the local districts. From lowest socioeconomic status to highest, the categories are A, B, CD, DE, FG, GH, I and J.District Factor Groups (DFG) for School Districts, New Jersey Department of Education. Accessed December 21, 2024.

Awards, recognition and rankings For the 1997-98 school year, Mainland Regional High School was formally designated by the United States Department of Education as a National Blue Ribbon School,National Blue Ribbon Schools Program: Schools Recognized 1982 Through 2019 (PDF), United States Department of Education. Accessed September 1, 2024. the highest honor that an American school can achieve."CIBA cited as one of the best by Education Department", Journal Inquirer, November 16, 2006. "The Blue Ribbon award is given only to schools that reach the top 10 percent of their state's testing scores over several years or show significant gains in student achievement. It is considered the highest honor a school can achieve.""Viers Mill School Wins Blue Ribbon; School Scored High on Statewide Test; The Washington Post. September 29, 2005 "For their accomplishments, all three schools this month earned the status of Blue Ribbon School, the highest honor the U.S. Education Department can bestow upon a school."

In the 2011 "Ranking America's High Schools" issue by The Washington Post, the school was ranked 26th in New Jersey and 910th nationwide.Mathews, Jay. , The Washington Post. Accessed August 4, 2011. In Newsweek's May 22, 2007 issue, ranking the country's top high schools, Mainland Regional High School was listed in 719th place, the 14th-highest ranked school in New Jersey."The Top of the Class: The complete list of the 1,200 top U.S. schools" , Newsweek, May 22, 2007. Accessed May 24, 2007. The school ranked as number 310 in Newsweek magazine's 2005 listing of "America's Best High Schools"., Newsweek, August 5, 2005.

The school was the 95th-ranked public high school in New Jersey out of 339 schools statewide in New Jersey Monthly magazine's September 2014 cover story on the state's "Top Public High Schools", using a new ranking methodology.Staff. "Top Schools Alphabetical List 2014", New Jersey Monthly, September 2, 2014. Accessed September 5, 2014. The school had been ranked 81st in the state of 328 schools in 2012, after being ranked 139th in 2010 out of 322 schools listed.Staff. "The Top New Jersey High Schools: Alphabetical", New Jersey Monthly, August 16, 2012. Accessed September 12, 2012. The magazine ranked the school 116th in 2008 out of 316 schools.Staff. "2010 Top High Schools", New Jersey Monthly, August 16, 2010. Accessed February 1, 2011. The school was ranked 104th in the magazine's September 2006 issue, which surveyed 316 schools across the state."Top New Jersey High Schools 2008: By Rank", New Jersey Monthly, September 2008, posted August 7, 2008. Accessed August 19, 2008. Schooldigger.com ranked the school 111th out of 381 public high schools statewide in its 2011 rankings (an increase of 47 positions from the 2010 ranking) which were based on the combined percentage of students classified as proficient or above proficient on the mathematics (86.1%) and language arts literacy (96.0%) components of the High School Proficiency Assessment (HSPA)., Schooldigger.com. Accessed March 4, 2012.

Athletics The Mainland Regional High School MustangsMainland Regional High School, New Jersey State Interscholastic Athletic Association. Accessed October 20, 2020. compete in the American Division of the Cape-Atlantic League, an athletic conference comprised of public and private high schools in Atlantic, Cape May, Cumberland and Gloucester counties, operating under the aegis of the New Jersey State Interscholastic Athletic Association (NJSIAA).League & Conference Officers/Affiliated Schools 2020-2021, New Jersey State Interscholastic Athletic Association. Accessed October 20, 2020. With 936 students in grades 10-12, the school was classified by the NJSIAA for the 2019–20 school year as Group III for most athletic competition purposes, which included schools with an enrollment of 761 to 1,058 students in that grade range.NJSIAA General Public School Classifications 2019–2020, New Jersey State Interscholastic Athletic Association. Accessed November 20, 2020. The football team competes in the United Division of the 94-team West Jersey Football League superconferenceMainland Mustangs, West Jersey Football League. Accessed May 1, 2023.Home Page, West Jersey Football League. Accessed May 1, 2023. "The WJFL is a 94-school super conference that stretches from Princeton to Wildwood encompassing schools from the Colonial Valley Conference, the Burlington County Scholastic League, the Olympic Conference, the Tri-County Conference, the Colonial Conference, and the Cape Atlantic League. The WJFL is made up of sixteen divisions with divisional alignments based on school size, geography and a strength-of-program component." and was classified by the NJSIAA as Group III South for football for 2024–2026, which included schools with 695 to 882 students.NJSIAA Football Public School Classifications 2024–2026, New Jersey State Interscholastic Athletic Association, updated September 2024. Accessed September 1, 2024.

The field hockey team won the South II sectional championship in 1973 and won both the South Jersey Group III sectional title and the overall Group III state championship in 1975.History of NJSIAA Field Hockey Championships, New Jersey State Interscholastic Athletic Association. Accessed May 1, 2023. The 1973 team won the Group III title against West Essex High School on a tiebreaker following a 0-0 tie after regulation in the championship game."Mainland girls win state Group 3 honors", Courier-Post, November 24, 1975. Accessed January 17, 2021, via Newspapers.com. "West Essex kept the Mainland scoring machine under control, but the Mustangs won the state Group 3 hockey title on time 19 seconds worth after a scoreless tie.... The Mustangs were losing by over two minutes in time after the first half, but kept chipping away at a very fine West Essex defense."