Ive beaten the game twice and trained only one jedi in those games. Can you train more than one Jedi?

yes

heheh sure can, My entire party is jedis excluding Mandalore and the Droids (which im betting none of them can be jedi!!!!!)

 

At least I hope Mandalore cant be, would create anouther huge whole in the game storyline if Mandalore is able to be trained as a Jedi/Sith. Revan would have done it first long time ago as thats where Mandalores first loyalty lays!