Question: Which is the population of a town located in Maine School Administrative District 12?

Context paragraphs:
Ashland District School: Ashland District School is located in Ashland, Maine, United States.  It is part of Maine School Administrative District 32, or MSAD 32, which serves Ashland, Garfield Plantation, Masardis, Oxbow, Portage Lake, and Sheridan, Maine.  There is a student population of approximately 320 from school grades Pre-K–12, with fifty-six faculty members as well as administrators, a counselor and three support personnel.  The school had achieved accredited status with the New England Association of Schools and Colleges.

Buckfield, Maine: Buckfield is a town in Oxford County, Maine, United States.  Buckfield is included in the Lewiston-Auburn, Maine metropolitan New England City and Town Area.  It is a member of Maine School Administrative District 39 along with nearby Hartford and Sumner.  The town had a population of 2,009 as of the 2010 census.

Ashland Community High School: Ashland Community High School was located in Ashland, Maine, USA.  It was part of Maine School Administrative District 32, or MSAD 32, which serves Ashland, Garfield Plantation, Masardis, Oxbow, Portage Lake, and Sheridan, Maine.  There was a student population of 200 in school grades 7–12, with eighteen faculty members as well as administrators, a counselor and three support personnel.  The school had achieved accredited status with the New England Association of Schools and Colleges.

Maine School Administrative District 12: Maine School Administrative District 12 (MSAD 12) is an operating school district within Somerset County Maine, covering the towns of Jackman and Moose River.

Regional School Unit 57: Regional School Unit 57 (RSU 57), formerly known as Maine School Administrative District 57 (MSAD 57), is a school district in Maine.  The district office is located in Waterboro, Maine next to Massabesic High School.  Its current superintendent is Larry Malone.

Maine School Administrative District 46: Maine School Administrative District 46 (MSAD 46) is a school district that serves the towns of Dexter, Exeter, Ripley and Garland, Maine.  It is located in Penobscot County which is also known as the "Maine Highlands".  There are a total of six schools in the district: Garland Elementary, Exeter Elementary, Dexter Primary School, Dexter Middle School, Dexter Regional High School, and Tri-County Technical Center.  Approximately 1,100 students from the area are enrolled.

Jackman, Maine: Jackman is a town in Somerset County, Maine, United States.  The population was 862 at the 2010 census.

Leavitt Area High School: Leavitt Area High School is a public secondary school that serves grades 9–12 in Turner, Maine.  It is a regional high school and serves the communities of Turner, Leeds, and Greene and is run by Maine School Administrative District 52.  It is bordered by the school districts of Buckfield Junior-Senior High School, Edward Little High School, Lewiston High School, Winthrop High School, Monmouth Academy (Maine), and Cony High School.

Maine School Administrative District 9: Maine School Administrative District 9 (MSAD 9) is a regional school district in Franklin County, Maine.  It serves children in grades K-12 with one high school (Mount Blue High School), one middle school and four elementary schools from Wilton, Maine; Farmington, Maine; Weld, Maine; Temple, Maine; Chesterville, Maine; New Vineyard, Maine; Industry, Maine; New Sharon, Maine; Starks, Maine; and Vienna, Maine.  MSAD 9 recently become RSU 9.

Maine School Administrative District 15: The Maine School Administrative District 15 is a public school district that operates three elementary schools (K–2 and 3–4), one middle school (5–8) and one high school (9–12) in Cumberland County in the U.S. state of Maine.  The school system serves the towns of Gray, Maine and New Gloucester, Maine.  The school system is run by a school board and superintendent system.

Supporting paragraphs: Maine School Administrative District 12 Jackman, Maine
Answer: 862