* School schedule: High schools have different bell schedules. Some have shorter lunch periods, others longer. Start and end times of the school day also influence lunch time.
* Grade level: Some schools stagger lunch times for different grade levels to reduce crowding in the cafeteria.
* School location: Rural schools might have different schedules than urban schools.
While you can't pinpoint a single average time, it's safe to say that most high school lunches fall between 11:00 AM and 1:00 PM. However, this is a broad range, and the actual time will depend on the factors listed above.