This is the technical document for the report, "Centering Quality, Centering Equity: Lessons Learned in Increasing Early Childhood Educator Credentials." The report explores Early Childhood Education (ECE) credential requirements in California (CA) and Washington, D.C. (D.C.) for two key reasons: 1) both recently raised these requirements and 2) both are in the process of implementing the new changes. The study does not seek to advocate in favor of or against the adoption of increased credential requirements. Rather, its purpose is to shed light on the need to center racial and economic equity in policy design and implementation--focusing on the impact of increased credential requirements on early childhood educators in states pursuing these changes. The appendices in this technical document are: (1) Make-up of Early Care and Education Workforce; (2) Center-Based Early Educator Characteristics by Role; (3) Center-Based Early Educator Work Experience and Credentials by Role; (4) Center-Based Early Educator Time Worked, Income, and Wages by Role; (5) Lead Teachers' Work Experience and Credentials by Race and Ethnicity; (6) Lead Teachers without a Postsecondary Degree, Characteristics by Race and Ethnicity; (7) Focus Group Interview Protocol for California; (8) Focus Group Interview Protocol for Washington, D.C.; (9) Hourly Wages for Early Childhood Educators; and (10) Comparison of D.C. Teacher Salaries in 2022 and Minimum Salaries Required in Fiscal Year 2024 for Programs Receiving Pay Equity Funds.