Teacher collaboration is regarded as an excellent method of giving teachers an opportunity to work and learn together. The article describes a study into the relationship between teachers' conversation and collaboration outside the classroom and their actual teaching. The study involves three teachers, and case studies of each teacher described observations, and interviews describing their participation in the after-school meetings. Findings show that although each teacher brought teaching successes and challenges to the group, the teachers with the most advanced teaching of literacy practices did not bring that expertise into the teacher group as fully as they might have.