Ah,I see through your REAL intention~~~ 
If you are looking for the real 'ninjutsu',join CIA or
equivalent~~~
If you are talking about fighting part of 'ninja',that is
taijutsu,which is the same thing as koryu jujutsu~~~
And why you want to learn it? Flip out and kill your love
rival(s)?Spy on pretty gals? 
Or penetrate the school and get the exam scripts b4 hand?
