He taught on the music faculties of several prominent American colleges, notably conducting several university choirs.
After serving in the United States Army during World War II, he entered the graduate music composition program at Princeton University where he was a pupil of Randall Thompson.
[2] While studying at Princeton, Lynn returned to Westminster Choir College as a faculty member, teaching classes in organ and conducting.
From 1971 to 1986 he directed choirs and taught conducting at the Colorado School of Mines and at Loretto Heights College.
Celebrations of his teaching, conducting and compositions will be held at Westminster Choir College in May 2015 and at the University of Colorado in October 2015.
There is a "100 Performance Centenary Challenge" which is meant to encourage musicians to include a piece of George Lynn's on a recital, or in a worship service or to build a concert around his music.