1.) Padawan

-All Jedi start out as a Padawan.
-Minimum manipulation/understanding of the force.
-Are trained by a Jedi Knight or Master.

2.) Jedi Knight

-Must pass the test given by their previous Master in order to be promoted from Padawan to Knight
-Medium level of manipulation/understanding of the force.
-Can take on a padawan as a student

3.) Jedi Master

-A Rank most Jedi cannot acheive, hand selected by the Jedi council.
-Mastered level of manipulation/understanding of the force.
-Can take on a padawan and jedi knight as a student.