its not likely depends on the extent if misdemeanors usually no 95 % of the time you don't.
they did something to go in or were framed
You can go for anything. such as fighting or drinking
No he did not.
Mabye
4 years
One hit will do it.
yes he went to juvie for six months
In season 1 it is implied duncan went to juvie for burning trash (or other objects) he also told gwen off camera in one episode but it was never confirmed what he said.
If that is TRULY all that was said, and there was no other associated dialogue or actions, probably not.
I am not sure but i think you have to be either 18 or 16. If you are younger you go to Juvie.
When a juvenile goes to juvenile detention, they are placed in a secure facility for individuals under the age of 18 who have committed a crime. While in juvie, they may receive counseling, education, and rehabilitation services. The length of their stay depends on the severity of the crime and can vary from a few days to several years.
They do something illegal. They go to detention because they are too young to go to prison.