Question: Hedley Marston attended a high school with a peak enrolment in the 1960s of how many students?

Context paragraphs:
Harbour View High School: Harbour View High School is a high school located in Saint John, New Brunswick, Canada.  There are many students attending grades 9-12 there.  The school has 63 staff members.  The school's Principal is "Mr. Micheal Butler" and the two Vice Principals are "Mrs. MacGregor (11-12)" and "Mrs. Curwin (9-10)", HVHS was formed in 1997 with 900 students, when the former Saint John Vocational School (200 students) was transformed into HVHS to accommodate School District 8's new geographic zoning policy for its 5 high schools.  In 2001, the school population was over 1300.  Harbour View High, despite its location in Saint John's North End, was meant to serve the high school students for Saint John, New Brunswick's Westside, the Grand Bay–Westfield area, and Fundy Shores Dipper Harbour.  The school, although no longer formally a vocational school, still carries many trade-related options.  A full range of academic courses exists alongside many vocational-type courses from Metals Processing to Business to Child Studies.  Harbour View also has a selection of Fine Arts courses which, alongside visual arts and music, offers Fine Arts 110, History of Rock and Roll, and Graphic Art & Design.

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.

Unley High School: Unley High School, located in Netherby, is one of the largest public high schools in South Australia.  In recent years the number of students enrolled typically ranges from 1,100 to 1,300, but in the early 1960s the school had a peak enrolment of 2,000 students.

A. Philip Randolph Campus High School: The A. Philip Randolph Campus High School is a four-year public high school in New York City.  It is located in Harlem, adjacent to the City College of New York.  It occupies a landmark building formerly occupied by The High School of Music & Art.  The school was established in 1979 as an educational collaboration between the Board of Education and The City College of New York.  The high school is open to all New York City residents, and more than 90% of its graduates attend college.  Its daily attendance rate is 90 percent or better throughout the year.  The students may take eleven advanced placement (AP) courses in five subject areas as well as college courses at Randolph, The City College, and Borough of Manhattan Community College.  In doing so, many students earn college credits while attending high school.

Integrated College Dungannon: Integrated College Dungannon (ICD) is an integrated secondary school situated in Dungannon, County Tyrone and is attended by students from ages 11–18 who are from Dungannon, Armagh, Moy, Portadown, Keady and Richill.  It was opened in September 1995 and has an enrolment of 530 students as of September 2012.  Many students come from Poland, Latvia, Lithuania, Bulgaria and Portugal.

Loretto High School: Loretto High School was a small, Roman Catholic, college-preparatory school for young women in Sacramento, California.  Although located in the Roman Catholic Diocese of Sacramento the school was independent of the diocese.  In 2005, Loretto High School celebrated its 50th anniversary.  In June 2009, the school closed.  Many students transferred to coed Christian Brothers and fellow all-girls St. Francis High School to complete their high school education, while others decided to go to public schools such as Mira Loma High School or El Camino Fundamental High School.

Waxahachie Global High School: Waxahachie Global High School is a high school in Waxahachie, Texas, founded in 2007 on the historic T.C. Wilemon campus.  It is one of only 91 STEM (science, technology, engineering, and mathematics) academies in the state of Texas.  It was additionally granted Early College High School status in 2009 through a partnership with Navarro College, allowing students to earn an associate degree along with their high school diploma.  Recently, as of the start of the 2013-2014 school year, Global High made a partnership with UT Tyler for all the STEM-based college courses offered at Global.  As a public charter school, students from Ellis County and surrounding areas can attend regardless of zoning.  Many students commute from surrounding cities such as Waxahachie, Red Oak, Ennis, Maypearl, Midlothian, Palmer, Italy, Cedar Hill, and Desoto.  Waxahachie Global was named a 2014 "Best High School" by U.S. News & World Report.

Beijing No. 4 High School: Beijing No. 4 High School (), commonly abbreviated as (Beijing) Sizhong (), and sometimes referred to as Beijing High School Four (BHSF), is a public beacon high school in Xicheng District, Beijing, China.  It is one of the most prestigious high schools in China.  It was established in 1907 by the Shuntian Government (Beijing Government) during the Qing dynasty, known as the Shuntian Secondary School.  After the Xinhai Revolution, the school was renamed as "Capital Public No. 4 Secondary School" (京师公立第四中学), which was not changed into the current name until 1949, when the People's Republic of China was proclaimed.  The school was among the first to be accredited as a "Municipal Model High School" by the Beijing Municipal Commission of Education.  More than 300 students from the school have won medals in municipal, national and international competitions every year.  More than 96 percent of its graduates passed the enrolment line of key universities (Tier 1 schools) in National Higher Education Entrance Examination.  In a 2016 ranking of Chinese high schools that send students to study in American universities, Beijing No. 4 High School ranked number one in mainland China in terms of the number of students entering top American universities, and number four internationally for high schools outside of the United States.  Many Chinese politicians and their children have attended Beijing No. 4.

Hedley Marston: Marston was born in Bordertown, South Australia and educated at Unley District High School, Adelaide, where he met Mark Oliphant.  He attended the University of Adelaide but did not complete a degree due to failing Mathematics.

Pennsylvania Governor's School for the Sciences: The Pennsylvania Governor's School for the Sciences (PGSS) is one of the Pennsylvania Governor's Schools of Excellence, a group of five-week summer programs for gifted high school students in the state of Pennsylvania.  Carnegie Mellon University in Pittsburgh has hosted the program since its inception in 1982.  Most recently, it has been directed by Physics Professor Dr. Barry Luokkala.  Participants are required to be Pennsylvania high school students between their junior and senior years and are required to live in the dormitories for the full five weeks of the program.  Admission is very competitive - approximately 500 of the most scientifically gifted students in the state compete for 56 to 60 slots in the program.  The aim of PGSS is to promote interest in science rather than to advance students' knowledge in a specific area.  The curriculum includes five "core" courses in Biology, Chemistry, Computer Science, Mathematics and Physics, and numerous electives.  In addition to taking classes, students are required to participate in a lab course and a research-style team project.  The emphasis is on cooperation, rather than competition - students are encouraged to both collaborate with other students on academic work and to interact socially.  The Residence Life staff provides a number of structured social events to foster friendship and teamwork.  There is at least one event per day and is advertised on the social calendar in the dorm lobby.  For many students, the social development gained from the program rivals the scientific knowledge they acquire.  The students leave the program with a strong bond; most attend an organized reunion the following year after the 4th week of the program.

Supporting paragraphs: Hedley Marston Unley High School
Answer: 2,000