JDJ IOS is an innovative educational ecosystem, the infrastructure of which is based on close substantive and technological cooperation of JDJ Bachalski (owner of the JDJ IOS brand) with accredited curriculum providers and educational institutions worldwide.

Since 1990, JDJ Bachalski  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. Until 2011, we have also run a chain of 28 JDJ Bachalski language schools across Poland (and one in Slovakia). We have served around 130 thousand clients so far.

JDJ Bachalski is part of the Bachalski Business Group operating in the medical (medi-raj.pl), turfing (zielonyhoryzont.com.pl), media (gorzow24.pl) and foreign education sectors (jdj.com.pl, jdj-ios.com, americanhighschool.pl). The group has been founded by its owner, Dariusz Jacek Bachalski who also served seven years as a politican, firstly as member of the Polish Sejm, and then as Senator.

JDJ International Open Schools (JDJ IOS) is an innovative education venture that was created in response to the COVID-19 pandemic. It was founded with the aim of providing students with access to quality education and learning opportunities in the 21st century. JDJ IOS is a venture co-founded and run by Jacek Bachalski’s son, Wojciech Bachalski.