Asian cultures tend to respect teachers more.
In USA, teachers are look down upon as failures so they have to end up teaching kids that no one wants to be around.
In Asian cultures, you have to be respectful to your former teachers and address them by laoshi or sensei, even when you become an adult.
In USA, kids are encourage to give their teacher a hard time so they can look cool in front of their peers.
In Japan, in respect, we refer to anyone of intellectual class , those with superior position as Sensei.
This is used for teachers, professors, doctors, lawyers, clergy, and anyone of political authority.
It is considered shameful , dishonorable to show improper etiquette towards an instructor.