Battin High School was a public high school in Elizabeth, in Union County, New Jersey, United States, which operated as part of the Elizabeth Public Schools. The school opened in 1889 as a coeducational institution. After converting to a girls-only school in 1929, it operated on a single-sex basis for 48 years until the end of the 1976–77 school year, ending its status as one half of the state's only pair of public high schools operated separately for male and female students.
The high school dates back to 1889, when it was opened at 300 South Broad Street in a mansion that had been donated to the city that same year by Joseph Battin, president of the Elizabethtown Water Company, and namesake of the school. A building was constructed on the site in 1913.
Originally operated on a coeducational basis, the school became female only starting in 1929, after Thomas Jefferson High School was constructed and dedicated to serve male students. In 1977, district officials stated that the inability to determine attendance zones for the two comprehensive high schools after Thomas Jefferson High School opened in 1929 combined with the expansive shop facilities in the new building, led the district to decide to split students by sex, with girls at Battin and boys at Thomas Jefferson.
On January 22, 1952, a Convair 240 operated as American Airlines Flight 6780 was flying on a route initiating in Buffalo, New York on final approach to runway 6 at Newark Airport in heavy fog conditions and crashed at 3:45 p.m., narrowly missing the high school. All 23 on board the plane (20 passengers and 3 crew) and an additional 8 people on the ground, were killed in the crash and ensuing fire, though the plane never hit the school building, as some earlier reports had indicated, and there were no students in the building at the time of the crash.
By 1972, the school was the only public high school in New Jersey operated exclusively for women, despite coeducational programs at both Princeton University and Vassar College. By that time, a policy under which pregnant students had been required to withdraw from school had been eliminated and students were allowed to return to school after giving birth and attending a special off-site program during their pregnancy. Though 40% of graduating students went on to college and district officials insisted that the curriculum was standard across the district's separate high schools, a student criticized the difference in expectations of male and female students, noting that "Boys are expected to be engineers and attorneys. Girls are supposed to be secretaries and mothers."