Authorized Regional Enrollment Area

The town of Amherst had long sought to apply economies of scale through a cooperative high school in partnership with adjoining towns and made several overtures in the late 1950s and early 1960s to neighboring Milford and other towns, but found no support. A proposal for a cooperative district with Bedford came to a vote in 1961, passing overwhelmingly in Amherst, but being defeated in Bedford.^[5]: 224 In November 1964, Amherst and Milford entered into the state's first Authorized Regional Enrollment Area (or "AREA") agreement, a long-term tuition agreement under which Milford would retain ownership and absolute control of the high school and Amherst would pay tuition to Milford based upon Milford's per-pupil costs of the preceding year, plus a share of the school's capital debt, but had no voice in the school's governance; the agreement was irrevocable while the debt was carried.^[5]: 225 Mont Vernon joined the AREA agreement and additionally sent its middle school students to Milford. Amherst was dissatisfied with the high school and its lack of voice, and "Milford felt that Amherst had educational ideas too rich for Milford's blood."^[5]: 225 The school boards of Amherst and Milford tentatively planned in 1976 not to renew the AREA agreement in ten years' time when the high school's capital debt was anticipated to be paid off.^[5]: 225 The Amherst School District appointed a committee to examine the alternatives, including building a high school of its own. The committee commissioned a study by an architectural and educational planning firm, which was published in 1982.^[5]: 225

Beginning in 1984, Amherst and Mont Vernon were each permitted to send one non-voting delegate to the Milford School Board, as was the high school's student body. Despite the tentative plan from nine years earlier for the towns' school districts to go their separate ways, negotiations for a prospective new AREA agreement began in 1985 with Amherst and Mont Vernon seeking significant improvements to the high school. The debt and the AREA agreement expired as expected at the end of the 1985–1986 academic year while negotiations continued; its tuition terms continued under annual tuition agreements in the interim.

Cooperative High School era

A regional school district was proposed and put before the voters of all three towns in 1988. The proposal was defeated at the Milford School District's special deliberative session. Days later, the Amherst School District held its special deliberative session where Amherst voters established the Souhegan Cooperative School District. Mont Vernon followed suit within the week.

The school opened in 1992, on property previously owned by the Amherst School District, adjoining the Amherst Middle School and sharing some outdoor facilities. The school added a second building in 2003, called the Annex.

The school is part of the SAU-39 school district, which includes the middle and elementary schools in Amherst and Mont Vernon.

The current principal of the high school is Michael Berry.^[1]

Program of studies

Souhegan's program of studies is extensive. School practices and decision-making at Souhegan High School are research-based and rooted in the tenets of their guiding documents. The tenets include Souhegan's mission statement, Coalition of Essential Schools Ten Common Principles, Academic Learner Expectations, and the Souhegan Six.

Academic foundations

Souhegan offers core academic programs in the following areas: Humanities, English, Social Studies, Mathematics, Science, World Languages, Classical Languages, Fine Arts, Performing Arts, Technology, Computer Science, Media Arts, Wellness and Health, Family and Consumer Science, and Business Education. The school also has multiple partnerships to provide Career and Technical opportunities..

Honors and Advanced Placement

Within most classes, an Honors Challenge option is offered to students who wish to pursue advanced academic studies. Honors Challenge guidelines are established school-wide; Honors Challenge expectations per course are developed by individual teachers. Credit for honors is earned by fulfilling the expectations. Honors is identified on the student's end of year report card and transcript with an ‘H.’ Students who are engaged in honors will also have the course identified with an HP (Honors Pending) on their transcript at trimester one.

Advanced Placement (AP): Advanced Placement courses are offered in the following subjects:

• AP English Literature
• AP English Language Composition
• AP Human Geography
• AP US History
• AP Statistics
• AP Calculus AB
• AP Calculus BC
• AP Chemistry
• AP Physics C
• AP Environmental Science
• AP French
• AP Spanish
• AP Studio Art
• AP Computer Science A
• AP Computer Science Principles

Academic Learner Expectations

ALE's are part of the evaluation of all student work, consistent with the school's commitment to developing 21st Century skills. These expectations consist of:

• Knowledgeable Person
• Complex Thinker
• Skilled Information Processor/Consumer
• Effective Communicator/Producer
• Self-Directed Learner
• Collaborative Worker
• Responsible Citizen

Grading based on these Learner Expectations is on a scale of "Does Not Meet", "Approaches", "Meets", and "Exceeds". These grades correlate to "F", "C", "B", and "A" on a traditional grading scale, respectively. Souhegan does not include "D" in the grading scale, any grade that would be a "D" is automatically an "F" or "NC" (No Credit).

Unique programs

The four traditional grade levels at Souhegan are split in two. Division One consists of Freshman and Sophomore year. Division Two consists of Junior and Senior year. The following project-based programs are core academic requirements:

Community Council

Community Council is the main governing body of Souhegan. The Community Council has the power to create and change Souhegan's policies, including but not limited to:

• Grading
• Scheduling
• Discipline
• All other issues of importance to the community

All of Community Council's power is derived from the Souhegan Cooperative School Board, rather than the school's administrators, which has the power to override any decision made by the Community Council. Community Council consists of parents, external community members, students, teachers, and administrative faculty, although all community members are encouraged to be a part of the discussions.^[12] Community Council meets directly after school once each week, except for one night a month when the meeting takes place at night. The Community Council consists of:

• 9th Grade Representatives (5)
• 10th Grade Representatives (5)
• 11th Grade Representatives (5)
• 12th Grade Representatives (5)
• Faculty/Staff Representatives (10)
• Dean of Students (1)
• Community Representatives (5)
• School Board Liaison (1)
• At-Large Representatives (10)

Community Review Board

The Community Review Board is a body of community members that was created to ensure the fairness of disciplinary actions by the school's administration. The Community Review Board only has authority in cases which do not involve outside agencies, such as the police. The Community Review Board consists of eleven members including:

• One student elected from each grade
• One student selected by random, voluntary lottery
• Two elected faculty
• One elected Community Council member

The Community Review Board has the authority to:

• Decide whether or not to hear a case
• Uphold the administration's decision
• Change the punishment set by the administration
• Nullify the administration's decision

In cases where the police department is involved, a student can appeal to the principal, superintendent, and then the school board. In cases where the school chooses not to pursue legal action, a student may still appeal to the CRB.

Souhegan Cooperative School Board

The Souhegan Cooperative School Board is a seven-member board that consists of five elected members serving Amherst, New Hampshire and two elected members serving Mont Vernon, New Hampshire. Different seats have terms of either two or three years, depending on the seat. Elections are held every year in March.

Athletics

The Souhegan Sabers compete across several divisions in the New Hampshire Interscholastic Athletic Association. The Sabers field 27 different girls, boys and co-ed athletic teams.

• The girls' soccer team set a state record by winning 9 straight Class I championships between 1992 and 2000.
• In 2003 the school set a state record with eight teams winning state championships. The softball, boys' baseball, boys' basketball, boys' track, boys' and girls' tennis and the girls' lacrosse teams all won state championships.
• The varsity ice hockey team won the NHIAA DIII state championships in 2006, 2007, 2008, and 2014.
• The varsity football team won the NHIAA DIII state championships in 2004, 2008, 2009, 2010 and 2020.
• In 2012, the boys' varsity indoor track, outdoor track, and cross country teams won DII state championship titles.
• In 2016, the girls' varsity cross country team was the first in school history to win the DII championship title. They also went on to win the New Hampshire Meet of Champions and earn runner-up honors at the New England Championships. The varsity girls team also placed 2nd as the Sabers Running Club at the non-NHIAA sanctioned Nike Northeast qualifier in Wappinger Falls, NY, and became only the third team from New Hampshire to qualify to compete at Nike Cross Nationals (formerly Nike Team Nationals).
• In 2017, the girls' varsity indoor track and field team won the DII state championship.
• In 2017, the girls' varsity lacrosse team won the DI state championship. Lacrosse is the only NHIAA sport Souhegan competes in at the DI level for both girls and boys programs.
  

  Souhegan Saber Lacrosse

Clubs

The Claw: Souhegan High School's digital magazine. Their website states, "we are a group of talented authors, journalists, photographers, cinematographers, and athletes dedicating our extracurricular time to celebrate the unique passions, interests, and intentions of our student body. We promise to report the truth: With sincerity. With accuracy. With integrity. And without bias."^[13]

In the 2016–2017 academic year, the school offered 47 different clubs and activities.