What knowledge is there to be gained by have school children in America write the shahad?
First off it is properly spelled "Shahada". Second; there is no such thing as bad knowledge. Knowledge is in and of itself benign. It is what you do with that knowledge that determines it's beneficence.
Europe is about to be over thrown by the steady encroachment of islam due to their ongoing ignorance of it's belief system. You want to defeat an enemy, then you darn well better understand what makes them tick.
Here is a quote from "The Art of War" by Sun Tzu. I strongly recommend that all three of you study it. James Clavell has the easiest translation, Ralph sawyer has the best commentary, but you can find several good translation on line for free.
“If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.â€