Mr. William Quinn was appointed the Assistant Principal for Administrative Needs in June 2026. He graduated from Siena College (now University) in 2006 with a BA in Mathematics.  He earned a Master’s Degree from Stony Brook University in 2009.

Mr. Quinn joined the faculty of Saint Anthony’s High School as a member of the Mathematics Department in September of 2006.  He served as the Head JV and Assistant Varsity Coach for the Girls and Boys Volleyball programs from 2006-2020.

He was appointed Chairman of the Mathematics Department in September of 2019.   He also currently serves as the Chairperson of Saint Anthony’s Middle States Accreditation Team, which just completed its most recent re-accreditation in the fall of 2026. Mr. Quinn will continue to serve as the Math Chairman and teach AP Calculus AB in his new role to keep his connection to the students of Saint Anthony’s./span>