Southern Illinois University School of Law

Southern Illinois University Carbondale

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William A. Drennan

Associate Professor of Law


Courses Taught:

526 - Basic Estate Planning
511 - Contracts I
512 - Contracts II
546 - Federal Business Taxation
525 - Federal Income Taxation
531 - Trusts and Estates


Professor Drennan joined the SIU School of Law faculty on a full-time basis in 2005, after teaching as an adjunct in 2004. He teaches federal income tax, business tax, trusts and estates, basic estate planning, and charities and charitable giving. He researches and writes in the areas of taxation and intellectual property. Prior to joining the faculty, Professor Drennan was in private practice for twenty years with a major St. Louis law firm, specializing in taxation, estate planning, nonqualified deferred compensation, and nonprofit organizations.

Professor Drennan has an LL.M. in Taxation from Washington University in St. Louis (awarded in 1997), and an LL.M. in Intellectual Property from Washington University in St. Louis (awarded in 2003). He graduated from St. Louis University Law School in 1985, magna cum laude. He was an articles editor for the St. Louis University Law Review, and was one of two tax law editors for the law review. He graduated from the St. Louis University School of Business and Administration in 1982, summa cum laude, with a major in accounting. He passed the Missouri CPA exam in 1984.

Professor Drennan is a member of the American Law Institute, a fellow of the American College of Tax Counsel, and a fellow of the American College of Trust and Estate Counsel.

Professor Drennan's articles have been published in the Alabama Law Review, Florida Law Review, Tennessee Law Review, Oklahoma Law Review, Utah Law Review, Miami Law Review, Arkansas Law Review, University of Toledo Law Review, Vermont Law Review, Florida Tax Review, and Virginia Tax Review. Professor Drennan taught in the LL.M. in Tax Program at Washington University in St. Louis from 1996 to 2000, as an adjunct professor.





Room 220
Lesar Law Building
Mailcode 6804
Carbondale, IL 62901
(618) 453-8729