text: Lastly the amount of screen time you will spend on the computer is insanely painful. Average time at school is about eight hours, and if a student wanted to do all of his classes in that time on conference they would be aching badly in the head. This is caused by the blue light that emits from a computer and staring at it all day can cause migraines. This can hurt ones ability to properly do well in online classes. Public schools dont have this issue and it is why video conference is not that clever.