CL@SS project training of Bulgarian teachers was held in the period from 11th of June till 12th of July 2016. The training was conducted in three groups with teachers from three schools in Sofia – 137th Secondary School “Angel Kunchev”, 22nd Secondary School “G. S. Rakovski” and Second English Language School „Thomas Jefferson“. The teachers participated with enthusiasm since they showed desire to develop new skills in their students. The trainers met the expectations of groups and the activities were held in an atmosphere of effective communication and positive emotions.