The data used in this report come from the 2017 School Crime Supplement (SCS), a nationally representative sample survey of students ages 12 through 18 enrolled in public or private school for all or part of the school year (not homeschooled for all of the school year). The SCS is administered every other year to students as a supplement to the National Crime Victimization Survey (NCVS). The SCS collects additional information from students about their perceptions or attitudes towards school discipline as well as information regarding their own behavior at school and their perceptions of unfavorable school conditions. This report investigates the relationship between students' perceptions of school discipline and their own behavior as well as the relationship between students' perception of school discipline and unfavorable school conditions. As the findings presented below show reportable differences and not causal interactions, readers should be aware that additional factors may be involved in explaining discrepancies between students' views of school discipline.