From 1965 until closure in June 2010, the school's 30-acre (12 ha) country-like campus included a stream, pond, woods, meadows, specimen trees and animal life of all kind which supported environmental studies.

The first chairman of Oak Lane's board of trustees was Dr. Morris Jastrow, Jr., the great scholar of Middle East languages and librarian of the University of Pennsylvania.

Francis Froelicher was elected president of the Progressive Education Association of America while he was Oak Lane's headmaster, and upon his departure in 1927, he went on to found the Fountain Valley School of Colorado.

[2] In 1929, funds provided by Mr. and Mrs. Leopold Stokowski, world-renowned orchestra conductor and Oak Lane parents, allowed the construction of a nursery school wing.

Many building concepts appropriate to young children were incorporated in its plans, such as smaller doorways and steps, cork flooring, special furniture and protected outdoor areas.

[3] During the Depression, Oak Lane began to experience financial difficulties and diminishing enrollment which opened the door for Temple University to consider acquiring the school.

Temple, on the lookout for opportunities to develop a laboratory-demonstration school, learned of Oak Lane's situation and it was not long before a merger between the two became official in April 1931.

Under John H. Niemeyer's eleven-year tenure from 1945 to 1956, Oak Lane became part of the School Affiliation Program of the American Friends Service Committee.

An exchange of pen pal letters and group projects formed the base of the affiliation program between Oak Lane and La Maison d'Enfants de Sèvres, France, a school just outside Paris whose purpose was to help children orphaned during World War II or whose parents were no longer able to care for them.

In June 1960, Temple University determined that it could no longer support Oak Lane Country Day School because of mounting debt and other issues, and the property on which it stood was sold to a developer.