Answer:
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
A skin have I, more eyes than one. I can be very nice when I am done.
White bird, featherless, flying out of paradise. Flying over sea and land. Dying in my hand.
I scribble forms of the finest letter, And repel elements of the harshest weather. I am an arrow-aimer and a dust-breaker.
Not a burden for its weight and daily carried out, He who takes it wishes it had never come about
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.