This document discusses performance ratings and developing a performance appraisal review system. It defines performance ratings as evaluating an employee's performance relative to a standard on a scale of less than, equal to, or greater than 100%. It also lists common rating errors. The document then defines performance appraisal as systematically evaluating employees' abilities for growth. Key elements of an effective performance appraisal system include aligning individual and organizational goals, measuring key results, providing regular feedback, and encouraging self-appraisals. Tips for implementation include selecting performance data, assigning appraisers, determining a rating philosophy, and creating review instruments.