OSS in school stands for "Out-of-School Suspension". It is a disciplinary action where a student is suspended from school for a certain number of days, usually up to three days. During this time, the student is not allowed to attend school, be on school grounds, or attend any school functions. The purpose of OSS is to address inappropriate or unsafe behaviors in the classroom.pdf?sequence=1). Schools are required to hold hearings for students who face OSS unless a student poses an immediate threat to others in the school setting.