The purpose of this explanatory sequential mixed methods research study was to explore the relationship between building teacher leadership capacity and campus culture in a suburban East Texas school district. Developing teacher leaders by building leadership capacity depends on administrators' abilities to develop leaders from within the existing staff and to shape campus culture. Results of this mixed methods study yielded findings that identified a statistically significant relationship between teacher leadership capacity and campus culture. Leaders play a role in the culture of corporate and academic organizations, and culture is at the forefront of exemplary performance of both entities. Therefore, administrator and teacher leaders must view culture as a priority and understand that culture is a product of school leadership.