A growing number of studies have suggested that teachers' personal competencies, and more specifically Emotional Intelligence (EI), are particularly important for teacher effectiveness. Recently, there has also been a growing recognition of the importance of social-emotional competencies to students' learning and academic achievement. However, there has been a neglect of emotions in the field of teaching, and little is known about the impact of training aimed at developing teachers' EI on their EI levels and their practice. The current study investigates the impact of a teacher- centered EI training on teachers' EI in Israel. The study followed a two-year EI training in one school, employing group workshops and personal coaching. The study used a mixed methodology, making use of pre-post EQ-i assessment and semi-structured interviews. The findings illustrate that the training programme was perceived by the participants to have enhanced their EI competencies, as defined by the Bar-On model. Most participants integrated these competencies into their personal, professional and group identities and modified their EI-related behaviours.