Michael Sullivan, the director of physical education, health and athletics, was hired as the new assistant principal at Darien High School, according to a release from Superintendent Stephen Falcone on Tuesday.

Sullivan will continue to serve as the director of physical education, health and athletics until a permanent or interim replacement is hired, according to Falcone.

"It was a tough decision to make the move back to the role of assistant principal as I truly enjoyed the year-and-a-half that I spent as Athletic Director," Sullivan said in an email. "Ultimately there were two factors that made the decision easier. First was the opportunity to work with students in all aspects of the school's environment. I can stay intimately involved with the athletic and PE programs while also working with students and teachers in other academic and extra-curricular areas. Second was the opportunity to work with a great administrative team. I am very excited to work with Principal Ellen Dunn and Assistant Principals Ellen Spark and Jake Greenwood along with the entire faculty and staff at the high school."

He served as assistant principal of the high school from 2009 to 2012, when he was appointed director of physical education, health and athletics position.

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Sullivan began his teaching career as a student intern at DHS prior to accepting a job in the math department. Eventually, Sullivan was chosen as the math department chairman.

While teaching math, Sullivan was instrumental in the increase in the number of students who enrolled in advanced placement classes.

Sullivan is also no stranger to the Darien sports scene. During his time at DHS, Sullivan has coached lacrosse and participated in multiple sports during his time as a high school and college student.

"The process for finding a new athletic director has just begun. I will work closely with Superintendant Steve Falcone, Assistant Superintendent Tim Canty and the hiring comittee to ensure that we get the best possible candidate in place," Sullivan said. "I will remain in my current role until a permanent or interim AD can be put in place. I will work very closely with my replacement to ensure that the programs are left in good hands."

Sullivan attended Western Connecticut State University, and graduated with a Bachelor of Arts degree in mathematics and a minor in history.

He earned his Master of Arts in education from Sacred Heart University, and a master's in education administration from the University of Connecticut.

"I had a wonderful experience as AD. I got to work with so many wonderful student-athletes and coaches. It was great to watch the growth of our teams from their first preseason practices through the season-ending league and state tournaments," Sullivan said. "I often told people that the best part of my job was that I ended each day by going to some sort of game or match. For a sports fan, that is not a bad way to end your day. The fact that I got to witness our teams win so many league and state titles was icing on the cake.