Jedi Hierarchy

Grand Master – The highest rank of the Jedi Order was that of Grand Master.

Jedi Master – A Jedi Knight who showed great understanding of the Force and managed to instruct a Padawan and train them successfully to the level of a Jedi Knight. This title could also be achieved through the performance of extraordinary deeds, or retaking the trials. Self-proclamation of the Jedi Master title was rare and frowned upon by the Jedi Council. 

Councilor ( Council Member) – A very few Jedi were invited to serve on the Jedi Council, the governing body of the Order. The Council was made up exclusively of wise, experienced Masters. The Council is made up of 12 masters, five of them holding life terms (two of them designated as "senior"), four holding long-terms, and three holding short-terms.

Jedi Knight – a disciplined Padawan can become a fully trained Jedi once they completed "The Trials", The  trials are, but weren't limited to: the Trial of Flesh, the Trial of Courage, the Trial of Skill and the Trial of Self;  "facing the mirror".

Jedi Padawan – an apprentice who begins training under a single Jedi Knight or Jedi Master.

Jedi Initiate- (Youngling) At a very young age, children were removed from their families and assigned to the Jedi Temple for training. Younglings were taught in communal groups known as clans.  In order to graduate to Padawan status, an Initiate was required to be chosen by a Knight or Master and taken as their sole pupil. In the days of the old Order, an Initiate could become a Padawan by passing less formal trials such as understanding the Code, building a lightsaber, and facing a trial of the dark side itself.