Feedback, talk and joint activities that build on knowledge and shared aims are powerful supports for learning. However, several studies of lower secondary students' perceptions of teachers' support indicate low teacher support. To investigate the quality of learning support, a content analysis instrument (CLASS) was used in analyses of 56 video-recorded lessons from 28 teachers in four lower secondary schools. This has allowed for a mapping of dimensions of quality feedback interactions, and results show significant and very strong inter-item relationships. The lessons analysed are characterized by a positive climate, and teachers emphasize encouragement, but feedback is found to be more encouraging than learning oriented. The results support previous studies based on students' perceptions, but provide insights into practices that are necessary if a goal is to influence teachers' professional learning.