This study investigates what discourses dominate teachers' beliefs about writing education and how these discourses are negotiated among teachers in social media. The empirical material is based on a stratified random sample of interactions, so-called threads, between teachers in three large open Facebook groups for teachers of Swedish (2,500-10,000 members). Taking Ivanič's 7 discourses of writing and learning to write as a framework, the study analyses discourses about writing visible in the interactions as well as blogs linked to, and school books and apps recommended. The two last steps are data-driven, emanating from previous steps. The result shows that 40% of the interactions concern writing. These interactions are dominated by a skills discourse. Further, a genre discourse challenges a former prominent discourse, the process discourse. Also, discourses in a social context are rare. The results indicate a narrow view of writing education in policy and practice, which, due to Ivanič (2004), can be interpreted as a consequence of a wider societal context where the educational system is questioned and explicit standards for writing are foregrounded. What conditions that would facilitate a wider range of discourses of writing in a school under pressure merits further investigations.