Since 1990, JDJ Bachalski (the owner of the JDJ IOS brand) has been a provider of top-notch international education to central and eastern European children, youth, and adults as the organizer of study-abroad programs and language courses overseas, as well as at JDJ Bachalski’s chain of language schools across Poland (and one in Slovakia) until 2011. We have served around 130 thousand clients so far.