If a school improvement plan includes input from all stakeholders and focuses on data-driven processes that are linked to teacher appraisal, it can be powerful in leading the school toward the common mission of achieving student success. Linking the school improvement plan to the teacher appraisal process creates a system whereby all individuals are focused on the school's goals and each individual understands his or her part in achieving those goals. Moreover, if the teacher appraisal process replaces traditional teacher evaluations, it will foster trust and professional collaboration. Northgate High School in Newnan, Georgia, began linking its school improvement plan to the teacher appraisal process on a voluntary basis approximately three years ago. This article discusses the general guidelines used by Northgate to implement the link between writing, implementing, and carrying out its school improvement plan and ultimately linking it to teacher appraisal.