This paper presents a profile of Mississippi's Quality Step System prepared as part of the Child Care Quality Rating System (QRS) Assessment Study. The profile consists of several sections and their corresponding descriptions including: (1) Program Information; (2) Rating Details; (3) Quality Indicators for Center-Based Programs; (4) Application Process; (5) Outreach; (6) Use of Observational Tools; (7) Improvement Process; (8) Financial Incentives; (9) Administration Details; (10) Partners; (11) Linkage of QRS with Other Systems; (12) Evaluation; and (13) Key Contacts. Section 100.04--Mississippi Child Care Quality Step System Overview of Criteria is included. [This document was prepared for the Office of Planning, Research and Evaluation of the Administration for Children and Families, Department of Health and Human Services.]