On November 19, 2005, Gallagher was inducted into the Athletic Hall of Fame at Upper Dublin High School as part of the inaugural class.
Most notable of these are the annual exchange programmes with the Upper Dublin High School in Pennsylvania, and the exchange trips with the Elizabeth Langasser Schule, Germany, and the Jules Ferry School, France, due to Harpendens own connections with the relative towns.
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Singer attended Upper Dublin High School in Fort Washington, Pennsylvania where he appeared in musicals and became a presidential scholar and a National Merit Scholar.