 Kairos retreats are organized by hundreds of Catholic high schools in the United States, especially Jesuit schools, and they are also offered by certain schools in Australia, Ireland, Britain, Lithuania, Canada and Switzerland (in English and French).The Kairos retreat program is based on the Cursillo retreat program and was developed in 1965 by the Diocese of Brooklyn, in the United States.A team of priests, brothers, and lay people under the direction of Fr.