Most college students come from other places. If something goes wrong, the students' choice is to go home, and it is not so easy to call the students again. Because the students' hometown is different, just like an epidemic, only by gathering students together and not communicating with others can the epidemic not spread.
3. "School" is a place built for students. It's no use sealing schools, but sealing students is the key. How can we call a school without students? When schools are closed, most of them are carried out when there are people in the school. Students and teachers are not the school crowd. When things happen, it is most appropriate to seal students and teachers.
College is not that easy. There are also time limits for college students to go in and out of school. As long as time passes, students can't go in and out of school. This is to ensure the safety of students.
Most cases of "school closure" are caused by students' panic. Students choose to leave school in a panic, which will abandon the original protection. "Suspension of classes" can protect students' safety and calm their emotions.