The "Effect of Discipline Reform Plans on Exclusionary Discipline Outcomes in Minnesota" study examined the use of exclusionary discipline practices by Minnesota local education agencies from 2014/15 through 2018/19 and the extent to which the creation of discipline reform plans by identified local education agencies was associated with changes in discipline outcomes. The study used administrative data on exclusionary discipline actions, student background characteristics and academic achievement, and local education agency characteristics that the Minnesota Department of Education shared with the Regional Educational Laboratory Midwest. The study found that creating a discipline reform plan was not associated with a statistically significant change in exclusionary discipline actions experienced by students. This document presents the following two appendixes that accompany the study: (1) Methods; and (2) Supporting analysis. [For the full report, see ED614777. For the Study Snapshot, see ED614778. For the Study Brief, see ED614779.]