These are the appendixes for the report, "Supporting Students with Health Conditions in District of Columbia Public Schools." The District of Columbia Public Schools (DCPS) partnered with the Regional Educational Laboratory Mid-Atlantic on a study to understand how the prevalence of health conditions differs by student characteristics, whether students are supported through a 504 plan or an individualized education program (IEP), and the relationship between student health conditions and education outcomes. The study team used data from District of Columbia Public Schools (DCPS) administrative records, DCPS standardized testing data, and the DCPS Conditions and Treatments report and linked the data using DCPS student identification codes that match across data sources. Two appendixes in the document include: (1) Methods; and (2) Supporting analyses. [For the full report, see ED612137; for the study snapshot, see ED612140.]