[4] Green became a leading expert in Tort law and authored the groundbreaking treatise, The Rationale of Proximate Cause in 1927.
[4] His curriculum expanded beyond traditional casework and also included practical work at the university's Legal Clinic and Scientific Crime Detection Laboratory.
[4] Students were also encouraged to interact with bar associations and to editor and contribute to the Illinois Law Review.
[1][4] Green testified before the Senate Judiciary Committee in favor of the Judicial Procedures Reform Bill of 1937, the so-called "court-packing" bill that aimed to increase the number of justices of the Supreme Court of the United States, believing it would increase the court's sensitivity to the people's needs.
[4] The failure of Northwestern students caused problems for Green with both law school alumni and university officials, but he maintained with issue was with a dated exam rather than his curriculum.
[1] He frequently contributed to legal periodicals and was also an editorial advisor for the Journal of Criminal Law & Criminology.
[1][2] In 2012, Stevens spoke of Green, saying:He was both an intimidating and inspiring teacher, who made his students stand when responding to his interrogation about assigned cases.
His theory, I believe, was that if a student could not withstand the pressure of intense, hostile questioning on his feet in class, he would never survive in a courtroom.
Under Dean Green's leadership, Northwestern provided its students with what I think of as a vertical rather than horizontal education, placing greater emphasis on procedure and the differing roles of judges and juries in different categories of cases than on the content of the black-letter rules that supposedly apply across the board in all types of cases...I am sure that there are countless Texas lawyers who share my admiration for Leon Green and for his writing about judges and juries.
[4] The Texas Law Review Association occasionally presents the Leon Green Award, its highest honor, for contributions to the legal profession.