A safe and welcoming school climate is essential for student achievement. School districts must understand climate issues, conduct assessments, pass policies, and make improvements where needed. Both academic and social factors influence whether students stay in school or drop out. Indicators of a good climate include high attendance, low bullying and suspensions. Bullying negatively impacts learning and disproportionately affects LGBT students. Suspensions are linked to lower achievement, grade repetition, and involvement in the juvenile justice system, and black students are suspended at higher rates than other groups for subjective reasons.