About 3.5 million students are suspended each year, and school punishment has been tied to a variety of negative outcomes. A new study took a longitudinal look at how school suspensions are related to offending behaviors that include assault, stealing, and selling drugs. It found that rather than decreasing subsequent offending, school suspensions increase this behavior.
source https://www.lifetechnology.com/blogs/life-technology-news-blog/school-suspensions-related-to-increases-in-subsequent-offending