Christopher Koy attended Palatine High School from 1977 to 1981. In 1985 he took his Bachelor of Arts degree at Beloit College and then moved to Zell-am-See, Austria on a Fulbright Teaching Grant. From 1987 to 1990 he studied at the University of Illinois, earning a Master of Arts degree in January 1990. In 1994 he moved to the Czech Republic to teach American literature and ESL. He enrolled at Charles University's post-graduate program in Anglo-American literature and cultures and in June 2011, he received his Doctor of Philosophy degree.
Christopher Koy worked for a term as an instructor at Illinois Wesleyan University in Bloomington, Illinois in 1990, and from 1990 to 1992 he taught at Westmar College in Le Mars, Iowa. In 1992 he took a position at Southeast Missouri State University in Cape Girardeau, Missouri. In 1994 he moved with his wife to the Czech Republic to take a position at the University of West Bohemia in Pilsen, Czech Republic.
Since 2006 Koy has worked as assistant professor of English at the University of South Bohemia in Ceske Budejovice. He held two summer positions as well: from July to August 2013 he was a Visiting Professor at the University of Mitrovica in the Republic of Kosovo. In 2015 he was a volunteer ESL Summer School Teacher at the Ukrainian Catholic University in Lviv, Ukraine. In 2018 he received a travel grant to conduct research in Arkansas.
Christopher is married to Daniela Anna Koy. They have three children.