Hedley Marston attended a high school with a peak enrolment in the 1960s of how many students?
Hedley Marston: Marston was born in Bordertown, South Australia and educated at Unley District High School, Adelaide, where he met Mark Oliphant. Unley High School:  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.
2,000