Padawans CL X - 59
Rryatt Trail (on quest EX-jedi)
Lok - (/way Lok -6295 4084) (decent spawn rate, 30 minutes should complete)
Endor - (/way Endor -215 3503) (the Padawans are in Light Colored robes)
Knights CL 60 - 69
Endor - (/way Endor -215 3503) (The Knights are in Dark Colored Robes) Note: there is also a single CL 78 Jedi Master at this location.
Yavin IV - (/way Yavin4 952 -1467) 4 Knights and 1 CL 78 Jedi Master, 3-4 minute spawn timer
Masters CL 70 - 79
Yavin IV - (/way Yavin4 4368 975) 3 CL 78 Jedi Masters, 5 minute spawn timer
Yavin IV - (/way Yavin4 952 -1467) 4 Knights and 1 CL 78 Jedi Master, 3-4 minute spawn timer
Endor - (/way Endor -215 3503) 1 CL 78 Jedi Master spawn amongst Knights (above). Spawns about every 3 or 4 minutes.
Dantooine Dark Jedi Knights
Elders CL 80 - 90
Treasure maps with group of 8 level 90 players. Finished after 3 maps. Alone, 2-3 Elders per map.
Yavin IV - (/way Yavin4 5232 425) (Level 90 elites, bunker is full of them. Soloable, best if you have good armor, buffs and easier if with group.)
Dantooine - (/way Dantooine 2958 4553) (3 Gold Bosses, decent spawn rate)
http://swg.wikia.com/wiki/Order_66