Question: Merrimack Valley High School, located in Salisbury, New Hampshire, has a population of how many students?

Context paragraphs:
Amesbury High School: Amesbury High School is a coeducational public high school in the city of Amesbury, Massachusetts, serving as the primary high school for students from Amesbury, South Hampton, New Hampshire, and also drawing some students from other parts of the lower Merrimack Valley region.

Panther Valley High School: Panther Valley High School is a small public high school providing grades 7 to 12.  It is the only high school for the Panther Valley School District.  Panther Valley High School is located in the borough of Summit Hill with a mailing address of 912 Coal Region Way, Lansford, PA 18232.  It serves students in both Carbon County and Schuylkill County.  According to the National Center for Education Statistics, in 2010, the school reported an enrollment of 488 pupils in grades 9th through 12th, with 219 pupils eligible for a federal free lunch.  Panther Valley High School is a federal Title I school.  The school employed 33 teachers yielding a student teacher ratio of 14:1.  According to a report by the Pennsylvania Department of Education, 10 teachers were rated "Non‐Highly Qualified" under No Child Left Behind.

Ohio Hi-Point Career Center: The Ohio Hi-Point Career Center is a career–technical school that provides career–technical training to high school students and adults in west-central Ohio.  Founded in 1974, Ohio Hi-Point (OHP) Career Center in Bellefontaine, Ohio, is a two-year career-technical school district serving 11th and 12th grade students in 14 partner school districts covering five counties, which comprises the career-technical planning district (CTPD).  Students may also opt to remain at their partner school and specialize in one of Ohio High-Point’s fifty-two satellite programs.  Career-technical programs offered at OHP are in the career fields of agriculture and animal science, arts and communication, business, engineering and manufacturing, health sciences, human and public service and transportation.  The high school services students from Bellefontaine High School, Benjamin Logan High School, Indian Lake High School, Waynesfield-Goshen High School, Upper Scioto Valley High School, Riverside High School, Mechanicsburg High School, Triad High School, Kenton High School, Ridgemont High School, Urbana High School, Marysville High School, West Liberty-Salem High School, and Graham High School.

Watsonville High School: Watsonville High School is a high school located in Watsonville, California in Santa Cruz County, and is part of the Pajaro Valley Unified School District.  This is an open campus school, thus students are able to leave and come back after lunch.  However, this has been a problem for many years; too many students skip class and end up either not graduating or having to move to other schools because of their cuts.  The school mascot is Willy the Wildcat.  The school colors are black and gold.  Their most recent rival (in sports) is Pajaro Valley High School, which is also located in Watsonville.  Watsonville High's long-time rival is Aptos High School; football games between the two schools is known as the "Black and Blue Bowl."  Watsonville High School is a large school with over 2,000 students and staff, making it the largest school in the Pajaro Valley Unified School district.

Merrimack Valley High School: Merrimack Valley is a four-year high school located in Penacook, a village in the northern part of Concord, New Hampshire.  The school has approximately 900 students and serves the communities of Andover, Boscawen, Loudon, Penacook, Salisbury, and Webster.  Two years of construction and remodeling were completed in 2007, resulting in a completely new facility.

Coachella Valley High School: Coachella Valley High School is a public high school for grades 9-12.  It is located in Thermal, California.  The District includes grade and middle school sites to accommodate a fast-growing population of the area.  The population is 90% Hispanic (excluding those from seasonal migrant laborers), and consists mainly of residents from Coachella.  Many students also come from areas such as Indio and Thermal.

Salisbury, New Hampshire: Salisbury is a town in Merrimack County, New Hampshire, USA.  The population was 1,382 at the 2010 census.

Hoosac Valley High School: Hoosac Valley High School is a public institution of secondary education located in Cheshire, Massachusetts.  It primarily serves students residing in the towns of Cheshire, Adams and Savoy.  Hoosac Valley, abbreviated HVHS, hosts grades 6 through 12.  As of 2013, HVHS enrolled 693 students.  It, along with Cheshire Elementary School and C.T. Plunkett Elementary School comprise the Adams-Cheshire Regional School District.  The 7th and 8th graders of the ACRSD attend classes at Hoosac Valley High School, though they may not take part in many high school sports unless there is a shortage of players, and their section of the school is known as Hoosac Valley Middle School and the younger children stay, for the most part, separated from the older ones throughout the duration of the school day.

Paloma Valley High School: Paloma Valley High School is a public four-year high school located in Menifee, California.  The school is part of the Perris Union High School District.  It opened its first school year on September 7, 1995.  The mascot is the Wildcat.  Paloma Valley High School was ranked by "Newsweek" magazine as the 374th best high school in California.  Students have the opportunity to take Advanced Placement course work and exams.  The AP participation rate at Paloma Valley High School is 35 percent.  The student body makeup is 51 percent male and 50 percent female, and the total minority enrollment is 65 percent.  Paloma Valley High School is 1 of 7 high schools in the Perris Union High.

Dougherty Valley High School: Dougherty Valley High School (commonly Dougherty, Dougherty Valley, Dougherty Valley High, DVHS, or DV High) is a public high school located in the Windemere development of San Ramon, California, United States.  Dougherty is one of four high schools in the San Ramon Valley Unified School District (SRVUSD), along with California High School, San Ramon Valley High School, and Monte Vista High School.  Constructed by Shapell Industries of California and Windemere Ranch Partners BLC, Dougherty was the first developer-built school in the SRVUSD.  The school opened its doors in 2007.

Supporting paragraphs: Merrimack Valley High School Salisbury, New Hampshire
Answer: approximately 900