Question: What high school serves the towns of Langdon, Acworth, Alstead, Charlestown, and Walpole, New Hampshire?

Context articles: Walpole, New Hampshire
Waterloo Community Unit School District 5
Langdon's Company of Light Horse Volunteers
Fall Mountain Regional High School
Kennett High School (New Hampshire)
Nashua High School South
Steven D. Smith
Charlestown Senior High School
South Acworth, New Hampshire
Dodgeville School District

Walpole is a town in Cheshire County, New Hampshire, United States.
 The population was 3,734 at the 2010 census.
Waterloo Community Unit School District is a unified school district located in Waterloo, which is both one of the largest cities in and the county seat of Monroe County, which is located in the southwest reaches of the state of Illinois.
 It is composed of five schools: three elementary schools, one junior high school, and one senior high school.
 W. J. Zahnow Elementary School serves students in grades PK-1; this picks up at Rogers Elementary School, which educates students anywhere in between second grade and third grade.
 Gardner Elementary School educates students anywhere in between fourth grade and fifth grade.
 Waterloo Junior High School serves grades six through eight, while this picks up at Waterloo High School, which serves the last of the four grades.
 The current superintendent of Waterloo's school district is Brian Charon.
 The principal of Zahnow Elementary is Mary Gardner; the principal at Rogers Elementary is named Brian Smith; Nick Schwartz governs Waterloo Junior High School; and lastly, Lori Costello is principal of Waterloo Senior High School.
Langdon's Company of Light Horse Volunteers was formed on July 21, 1777 at Portsmouth, New Hampshire for Gen. John Stark's Brigade gathering at Charlestown, New Hampshire during the Saratoga Campaign.
 The company was formed by picked volunteers from other New Hampshire militia units.
 The company was with Stickney's and Hobart's regiments during the Battle of Bennington.
 Langdon's Company of Light Horse Volunteers would continue on in Stark's Brigade to cut off British Gen. John Burgoyne from retreat or supply after the Battle of Freeman's Farm.
 The company would also take part in Gen. John Sullivan's campaign in Rhode Island in 1778.
 The company was disbanded in the fall of 1778.
Fall Mountain Regional High School is a small high school located in Langdon, New Hampshire, in the United States.
 The school, part of SAU 60 in New Hampshire, serves the towns of Langdon, Acworth, Alstead, Charlestown, and Walpole.
Kennett High School is an American high school located at 409 Eagles Way in North Conway, New Hampshire, near the village of Redstone.
 The present school building opened in 2007, replacing the former A. Crosby Kennett High School (built in 1923) located at 176 Main Street in Conway, which is now a middle school.
 Kennett High School serves the towns of Conway, Albany, Bartlett, Eaton, Freedom, Hart's Location, Jackson, Madison, and Tamworth.
Nashua High School South, formerly Nashua High School, is a public high school located in Nashua, New Hampshire.
 The school's current location was erected in 1975 with its first class graduating in June 1976.
 The school was remodeled between 2002 and 2004 when a second school, Nashua High School North, was built.
 The existing high school building was renamed Nashua High School South.
 The school serves approximately 2200 students, making it the largest public high school in New Hampshire, and the second largest high school overall, after the private Pinkerton Academy.
Steven "Steve" Smith (born June 23, 1964) is a New Hampshire politician and a member of the New Hampshire House of Representatives representing Sullivan County District 11, which includes the towns of Acworth, Charlestown, Goshen, Langdon, Lempster, and Washington.
 He is a software tester by profession, and also runs a slot car business and racing facility.
Charlestown High School is a public high school located in Charlestown, Indiana.
 The school serves students in grades 9 through 12 from Charlestown, Otisco and Marysville.
 The current principal is Mark Laughner.
South Acworth is an unincorporated community in the town of Acworth in Sullivan County, New Hampshire, United States.
 It is located around a dam on the Cold River, 2 mi south of and 700 ft downhill from the Acworth town center.
 New Hampshire Route 123A passes through the village, heading east to New Hampshire Route 10 in the town of Marlow and west to Alstead.
The Dodgeville School District is headquartered in the city of Dodgeville, Wisconsin.
 It serves students from Dodgeville and Ridgeway.
 It consists of four schools: two elementary schools, one middle school, and one high school.
 One elementary school is located in Dodgeville; Dodgeville Elementary, the other in Ridgeway; Ridgeway Elementary.
 The Dodgeville school serves students in pre-K through 4th grade, and the Ridgeway school serves those in pre-K through 5th grade.
 The middle school serves grades 6 through 8, and the high school serves grades 9 through 12.