Sarah Diane McShea has practiced in the professional responsibility field since 1980. Her solo law practice is devoted to advising lawyers and law firms on professional responsibility matters. She represents lawyers in disciplinary proceedings; litigates sanctions and disqualification issues; provides ethics and professional advice to lawyers, law firms, government agencies and in-house law departments; represents bar applicants; and serves as an expert witness on professional responsibility issues. McShea is a member of the Editorial Board of the ABA/BNA Lawyers' Manual on Professional Conduct. She is a member of the New York State Bar Association's Committee on Standards of Attorney Conduct and serves on several other bar association professional ethics committees as well. McShea is a contributing editor to The New York Rules of Professional Conduct (Oxford, 2011); a founding member and Past President of the Association of Professional Responsibility Lawyers (APRL) and a Trustee of the New York State Lawyer Assistance Trust. She also teaches professional responsibility as an adjunct professor at Fordham University School of Law and previously was an adjunct at Columbia University School of Law and Brooklyn Law School. She is a former Deputy Chief Counsel to the Departmental Disciplinary Committee in the First Department and former Bureau Chief (Public Corruption) in the Kings County District Attorney's Office. She graduated from Yale College and Boston University School of Law.