* It's summer vacation. Many schools have a break in the summer, so students are out of school and enjoying their time off.
* It's a holiday. If there's a holiday, students may be out of school for the day or the week.
* It's a weekend. Most students don't go to school on weekends, so you'll likely see fewer of them around.
* It's a specialized school. Some schools, such as private schools or specialty schools, may have smaller student bodies or different schedules than public schools.
* The school has closed. If the school has closed, students will no longer be attending.