Prestige class

A Prestige class is a rank collective for a number of ranks and/or titles, including;
 * Jedi Master
 * Jedi Weapon Master
 * Jedi Watchman

For the Jedi and;
 * Sith Lord
 * Sith Marauder
 * Sith Assassin

For the Sith.

Behind the scenes
The class first and, so far, only appearance is Star Wars: Knights of the Old Republic II: The Sith Lords. At level 15 the Jedi Exile would choose one of the classes/ranks, one of the Jedi's if light sided or one of the Sith's if dark sided.

Appearances

 * Star Wars: Knights of the Old Republic II: The Sith Lords