Question: Where are the headquarters of this school district serving unincorporated area of Garfield, and partly comprised from North Montgomery High School?

Context articles: Montgomery High School (New Jersey)
Whittier Union High School District
Montgomery High School (Montgomery, Texas)
Montgomery High School, San Diego
School District of Osceola County, Florida
Ohio Hi-Point Career Center
Mifflinburg Area School District
North Montgomery High School
North Montgomery School Corporation
Riverview School District (Pennsylvania)

Montgomery High School is a four-year comprehensive public high school located in the Skillman area of Montgomery Township, in Somerset County, New Jersey, United States, serving students in ninth through twelfth grades as the lone secondary school of the Montgomery Township School District.
 The school has been accredited by the Middle States Association of Colleges and Schools Commission on Secondary Schools since 1976.
Whittier Union High School District is a California high school district serving most of the City of Whittier, the unincorporated community of South Whittier and parts of La Mirada and Santa Fe Springs.
 The union high school district was formed in 1900 and is currently composed of five comprehensive high schools, two alternative high schools, and an adult education center.
 Combined, these schools serve over 13,000 students.
 The school district is overseen by its current Superintendent, Martin Plourde.
Montgomery High School a high school in unincorporated Montgomery County, Texas, west of the City of Montgomery.
 A part of the Montgomery Independent School District.
 It feeds from the town of Montgomery, as well as a large portion of unincorporated Montgomery County, including most of west and south shores of Lake Conroe, and as far south as The Woodlands, Texas.
 In the years of 2013, 2014, and 2015, Montgomery High School was named one of Newsweek's Best schools in America.
 Montgomery High School offers Dual Credit and Advanced Placement courses for students.
Montgomery High School (MOH) is a four-year (grade levels 9-12) public high school located in the city of San Diego, California.
 It opened in 1970 and is situated today in Otay Mesa.
 Montgomery High School serves more than 2,500 students and is named after pioneer aviator John J. Montgomery, who made the first manned glider flight in U.S. history from a hill in the area where the school is located.
The School District of Osceola County, Florida is a school district serving all of Osceola County, Florida.
 As of the 2011-12 school year, the district had 71 schools.
 The district has its headquarters in an unincorporated area.
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.
The Mifflinburg Area School District is a small, rural, public school district serving western Union County, Pennsylvania.
 Centered on the borough of Mifflinburg, it also serves Buffalo Township, New Berlin, Limestone Township, West Buffalo Township, Lewis Township, Hartleton, and Hartley Township.
 Mifflinburg Area School District encompasses approximately 217 sqmi .
 According to 2000 United States Census data, the district served a resident population of 17,867.
 By 2010, Mifflinburg Area School District's population declined to 16,366 people.
 The educational attainment levels for the Mifflinburg Area School District population (25 years old and over) were 81.5% high school graduates and 17.5% college graduates.
 The region has a large Amish community who do not attend school past 8th grade.
 Most Amish children attend private schools operated by the amish community, rather than the local public schools.
 The district is one of the 500 public school districts of Pennsylvania and one of four full or partial public school districts operating in Union County.
North Montgomery High School is a public high school located in unincorporated Montgomery County, Indiana, near Crawfordsville.
 It is a part of the North Montgomery School Corporation.
North Montgomery Community School Corporation (NMCSC) or North Mongomery Schools is a school district headquartered in unincorporated Montgomery County, Indiana, north of Crawfordsville.
 The district serves some sections of northern Crawfordsville, Darlington, Linden, New Richmond, Waynetown, and Wingate.
 It also serves the unincorporated area of Garfield.
The Riverview School District is a small, suburban public school district serving the Pittsburgh suburbs of Oakmont, Pennsylvania and Verona, Pennsylvania.
 Riverview School District encompasses approximately 2 square miles.
 According to 2014 federal census data, it serves a resident population of 8,900.
 In 2015, the district residents' per capita income was $31,812, while the median family income was $50,701.
 Per District officials, in school year 2016-2017, the Riverview School District provided basic educational services to 970 pupils.
 Riverview Jr-Sr High School is a small, 1st tier Pittsburgh district serving the towns of Oakmont and Verona.