This document outlines a dissertation that examines middle school principals' perceptions of their role in addressing non-suicidal self-injury (NSSI) among adolescent females ages 10-14. It provides background on the increasing rates of NSSI, especially among adolescent girls. The study aims to understand how principals view and approach the issue, and what factors influence their efforts. The dissertation will utilize surveys and interviews of principals to gather data on their perceptions, current approaches, and barriers/supports regarding NSSI. The goal is to inform school staff and administrators on preventing and limiting NSSI among students.