This single facet of the story is in my opinion the most ridiculous angle of all. Why would terrorists send their soldiers half way around the world, into the land of their enemy, the USA, to attend private flight schools to get their pilot license on single engine prop planes, in order to hijack multiple engine jet airliners and crash them into buildings?
Why not just fully train them to fly jets at flight schools in their own countries before sending them off to hijack multiple engine jet airliners here?
Answer: They wouldn't.
What? Yer tellin me them ay-rabs have them new fangled flight lernin places too??! 'uzgood as are uns??! I done believe it. Not fer a minute. No sir!
See how the USA uses propaganda to enslave the minds of people: