Lexington was twinned with County Kildare, Ireland in 1984. Home to the Irish National Stud, the top breeding facility in Ireland, County Kildare is the center of the thoroughbred industry in Ireland. There are three racetracks in County Kildare: the Curraugh, Naas, and Punchestown. County Kildare is also Sister Cities with Deauville, France.
Each summer, Lexington students take part in an exchange with County Kildare, Ireland.
Lexington welcomes students from Maynooth University during the summer to intern at local horse farms.