This is the technical appendix for the report, "Teacher Staffing Trends in California: Assessing the Impact of Recent Spending," which examines recent trends in district staff spending, student-teacher ratios, and teacher credentials and experience, with an added focus on districts that received targeted funding for high-need students under the Local Control Funding Formula (LCFF). This appendix includes the following sections: (1) Data Sources; (2) Differences-in-differences LCFF Estimates; (3) Supplementary Tables and Figures; and (4) State-funded Teacher Recruitment, Training, and Retention Programs.