A recipient of a William F. Starr Scholarship and the 1982 Judge David E. Bazelon Award for Civil Rights, Attorney Schoenhorn over the years has represented thousands of individuals and businesses with legal problems. He is a Life Fellow of the Connecticut Bar Foundation, and formerly served as an administrative hearing officer for the Connecticut Commission on Human Rights and Opportunities. In 2006‑07 he served on the Legislative Task Force for Sentencing Reform. For over 18 consecutive years, he has been named a New England "Super Lawyer" in criminal law – a peer‑reviewed and professional achievement rating from Connecticut Magazine; and as one of the Top 100 Connecticut trial lawyers by the National Trial Lawyers Association.

Attorney Schoenhorn is a founding member and former president of the Connecticut Criminal Defense Lawyers Association, and served for many years as an elected member of that  Association's Executive Board. In 2022, he was recognized by the organization for his accomplishments with a Lifetime Achievement Award.

In 1990, Attorney Schoenhorn was first certified by the National Board of Trial Advocacy as both a criminal trial specialist and civil trial specialist, demonstrating proficiency and expertise in these areas of the law. Only a handful of attorneys in the nation have ever achieved dual certification in these areas.