A 1956 graduate of Illinois College, Arroll built a distinguished legal career in New York City through decades of private practice and appellate advocacy. He was widely known for his role in the landmark case Consolidated Edison Co. of New York, Inc. v. Arroll, which became a classic teaching example in American contract law.

Arroll maintained a lifelong connection to his alma mater through generous philanthropy and dedicated alumni engagement. A Phi Beta Kappa graduate, he was a member of Gamma Nu Literary Society, served on the Alumni Board and received the Distinguished Service Award from the Alumni Association in 1991.

He supported Illinois College faithfully for 56 consecutive years. Arroll was a Lifetime Member of the Illinois College Society and a member of the Julian Monson Sturtevant Society. During his lifetime, he established scholarships honoring people who made a profound difference in his life, including professors Dr. Malcolm F. Stewart and Joe Patterson Smith, his former IC debate coach Lloyd P. Dudley.

Through his estate, he honored his parents by endowing the Rose and Henry Arroll Memorial Scholarship, reflecting his deep belief in the transformative value of education and his desire to create opportunities for future Illinois College students.