"Most striking, students showed higher gains in math achievement when their teachers reported frequent conversations with their peers that centered on math, and when there was a feeling of trust or closeness among teachers. In other words, teacher social capital was a significant predictor of student achievement gains above and beyond teacher experience or ability in the classroom. The effects of teacher social capital on student performance were powerful.”

This is a quotation by Dr. Carrie Leana in an Education News piece, "Julia Steiny: Terrific School Morale Improves Math Scores," which you can read in full here. Feel free to discuss in the comments.