This report explores the role of accountability in school improvement and its potential drawbacks. While accountability can provide feedback, reorient action, and justify action, it can also lead to gross distortions and may not sufficiently incentivize teachers. The authors argue for a consensual view of the teacher's role and for parsimonious accountability schemes that enhance the quality of life among teachers. They propose design considerations that can improve the effectiveness of testing and controls to enhance the teaching profession.