The Lawrenceville School history

When ''the Circle,'' the oldest part of the campus, was laid out in 1880 by Frederick Law Olmsted, designer of New York's Central Park and Philadelphia's Fairmont Park, it incorporated more than 300 species of trees and shrubs.

An 18-acre (7.3 ha) area of the campus built then, including the Hamill House and numerous other buildings, has been designated a United States National Historic Landmark District. It had several names, including the Lawrenceville Classical and Commercial High School, the Lawrenceville Academy, and the Lawrenceville Classical Academy, before its current name, "The Lawrenceville School," was adopted during its refounding under the John Cleve Green Foundation in 1883.

An addition to the campus outside of that district was built in the 1920s.

Lawrenceville's student body was almost entirely white for its first 150 years, with the first African American student admitted in 1964.

The district was declared a National Historic Landmark in 1986. It is included in the Lawrence Township Historic District, created in 1972.

Boczkowski, the first woman hired to teach at Lawrenceville in 1976. ''There is an awful lot of support here, largely because the relationship between students and faculty members is very close.''

A 1986 PBS miniseries was based on Johnson's Lawrenceville tales.

Finally, in 1987, after years of internal debate and fierce resistance by some alumni and trustees, Lawrenceville began to admit girls.

In its 2015 rankings the year before, Business Insider had ranked the school's tuition as the 2nd most expensive private high school tuition in the United States, with tuition and fees of $48,700 behind the $49,092 charged by Connecticut's Salisbury School.