Emotional skills underpin what teachers do. However, relatively few studies have investigated whether these skills can be formally learnt by teachers and the benefits enhancing teachers' social-emotional skills may have on students. The current research aimed to develop an intervention to improve teachers' social-emotional skills in the classroom and to assess changes in teachers' emotional teaching practices and their emotional awareness in the classroom, as well as changes in students' social-emotional behavior in relation to changes their teachers may have made. Twenty-seven teachers of Year 3-8 (8-13 year old) students participated in an emotional skills intervention, which took place over three months. The findings yielded mixed results. In line with predictions, decreases in teachers' undesirable relating and setting limits were found. However, no relationships between teacher changes and students' pro-social behavior and emotion were found. However, students of teachers who improved compared to those who did not on observed emotional practices, reported significant differences in their teachers' leadership, helpfulness/friendliness, understanding, student responsibility/freedom, student admonishing and strictness.