The 2012 TSP Symposium was organized by the Software Engineering Institute (SEI) and took place September 18-20 in St. Petersburg, FL. The goal of the TSP Symposium is to bring together practitioners and academics who share a common passion to change the world of software engineering for the better through disciplined practice. The conference theme was "Delivering Agility with Discipline." In keeping with that theme, the community contributed a variety of technical papers describing their experiences and research using the Personal Software Process (PSP) and Team Software Process (TSP). This report contains the six papers selected by the TSP Symposium Technical Program Committee. The topics include analysis of performance data from PSP, project performance outcomes in developing design systems, and extending the PSP to evaluate the effectiveness of formal methods.