Early in the 1970s, two important changes occurred. First, Pingry began the transition to a coeducational school. The first female students, who graduated in 1976, were succeeded by other young women who today represent half the student body. Second, Pingry grew again by merging with the Short Hills Country Day School to become a school with grades from kindergarten through grade 12. Today over 250 children attend the Pingry Short Hills Campus. In this period of about twenty years, David C. Wilson and H. Wescott Cunningham each served as headmaster.