Accreditation is a voluntary method of quality assurance developed more than 100 years ago by American universities and secondary schools. Accreditation engages the entire school community in a continuous process of self-evaluation, reflection, and improvement. It invites external scrutiny and welcomes the constructive feedback of peers. It demands rigor, is based in data, and approaches documentation of results with discipline. Accreditation is about making the quest for excellence a habit; it's about being the best a school can be on behalf of the students it serves.