When judge enters courtroom, everyone MUST stand up

A courtroom is an official room where legal meetings and trials take place. When the judge enters the courtroom, everyone in the room is expected to stand up.

Courtrooms can vary in size. In movies and on TV, they are usually large, formal rooms with spaces for the judge, jury, witnesses, defendant, and audience. In real life however, sometimes they look more like small meeting rooms. SOURCE: https://www.facebook.com/AmericanEnglishatState