Late school time start

I feel when school starts late students tend to become very lazy.they would have a very relaxing time as school starts late and it ends late so the students have reasons to tell to their teachers.Like telling teachers that school started very late and they reached home very late and they felt very tired.When school tend to start late student may change in behaviour in class.I would like to advice all the schools not to start school very late.Thank you for reading this message and i am sure you understand what i have written.