Question: what is the athletic conference which Whitingham is also the headquarters of affiliated with  

Context paragraphs:
Pacific Coast Athletic Conference (CCCAA): The Pacific Coast Athletic Conference (PCAC) is a college athletic conference that is affiliated with the California Community College Athletic Association (CCCAA) and includes community colleges in the San Diego region of California.  It should not be confused with the former NCAA Division I Pacific Coast Athletic Conference that was a precursor to the current Big West Conference.  The PCAC has won numerous state championships in the CCCAA.

Pioneer Athletic Conference: The Pioneer Athletic Conference is a high school athletic conference with ten members properly abbreviated as the PAC-10.  The Pioneer Athletic Conference is affiliated with the Pennsylvania Interscholastic Athletic Association (PIAA) and all participating school districts are located within the southeastern quadrant of Pennsylvania.  The Pioneer Athletic Conference was founded in 1985 and was then known as the "PAC-8" due to then-current membership total.

Whitingham, Vermont: Whitingham is a town in Windham County, Vermont, United States.  The town was named for Nathan Whiting, a landholder.  The population was 1,357 at the 2010 census.  Whitingham is the birthplace of Brigham Young, the second president of The Church of Jesus Christ of Latter-day Saints (LDS Church) and founder of Salt Lake City, Utah.  Whitingham is also the headquarters of the North Atlantic Conference.  Its village center is listed on the National Register of Historic Places as the Whitingham Village Historic District.

North Atlantic Conference: The North Atlantic Conference (NAC) is an athletic conference, affiliated with the NCAA ’s Division III, consisting primarily of small liberal arts colleges throughout the New England states of Maine, New Hampshire and Vermont.

Appalachian Athletic Conference: The Appalachian Athletic Conference (AAC) is a college athletic conference that competes in National Association of Intercollegiate Athletics Division II competition.  Members of the conference are located in the Southeastern United States in Tennessee, Kentucky, Georgia, South Carolina, North Carolina, and Virginia.  The conference is the successor to the Volunteer State Athletic Conference (VSAC), which began in the 1940s; and later the Tennessee-Virginia Athletic Conference (TVAC) that operated during the 1980s and 1990s.  The Appalachian Athletic Conference was formed in 2001 with the additions of members from Virginia, Kentucky, and North Carolina.

City University of New York Athletic Conference: The City University of New York Athletic Conference (CUNY Athletic Conference or CUNYAC) is an intercollegiate athletic conference affiliated with the NCAA's Division III.  Its member institutions are all located in New York City and are campuses of the City University of New York.  The CUNYAC also has a community college division, affiliated with the National Junior College Athletic Association (NJCAA).

Great Plains Athletic Conference: The Great Plains Athletic Conference (GPAC) is a college athletic conference affiliated with the National Association of Intercollegiate Athletics (NAIA).  Member institutions are located in Iowa, Nebraska and South Dakota.  The conference was founded in 1969 as the Nebraska Intercollegiate Athletic Conference, later becoming the Nebraska-Iowa Athletic Conference (1992) before being renamed the Great Plains Athletic Conference (2000).

Midwest Conference: The Midwest Conference (MWC) is a college athletic conference affiliated with the NCAA's Division III.  Member institutions are located in the Midwestern United States in the states of Illinois, Iowa, and Wisconsin.  The Midwest Conference was created in 1994 with the merger of the Midwest Collegiate Athletic Conference, which had been sponsoring men's sports since 1921, and the Midwest Athletic Conference for Women, which was formed in 1977.

Nebraska College Athletic Conference: The Nebraska College Athletic Conference (known as the Nebraska Intercollegiate Conference from 1916–1926) was an intercollegiate athletic conference that existed from 1916 to 1976.  The league had members, as its name suggests, in the state of Nebraska.  The public colleges in the conference departed for the separate Nebraska Intercollegiate Athletic Association (NIAA) in 1928 but re-joined after 1942.  The private colleges, in turn, broke away to form the Nebraska Intercollegiate Athletic Conference (now called the "Great Plains Athletic Conference") in 1969 and did not return before the NCAC folded in 1976.

Northeast Eight Conference: An eight-member IHSAA-Sanctioned Athletic Conference within the Northeastern Indiana counties of Adams, Allen, DeKalb, Huntington, Noble, Wells, and Whitley.  The conference was started in 1989 as the Northeast Hoosier Conference when six schools from the Northeastern Indiana Athletic Conference (Bellmont, Columbia City, DeKalb, East Noble, Homestead, and New Haven) joined with two schools from the Allen County Athletic Conference (Fort Wayne Carroll and Norwell).  The smaller six schools decided to pull out of the conference in 2015 the conference will cease to exist, forcing Carroll and Homestead out, who then joined the Summit Athletic Conference.  The remaining schools, while settling on the current league name, added Huntington North of the North Central Conference and Leo of the Allen County Athletic Conference, who are more similar in size to the rest of the schools.  While the six NEHC schools technically dropped out, they never actually left the league, having succeeded in forcing out the two large Fort Wayne schools, ended up staying in the league.  This is not an unheard of tactic, as most notably Ohio's Chagrin Valley Conference pulled virtually the same move around the same time.

Supporting paragraphs: Whitingham, Vermont North Atlantic Conference
Answer: NCAA ’s Division III