SCHOOL'S STAGE WAS SET FOR A STARK LESSON Three invited pro-military speakers were shocked last Friday when they arrived for a West Seattle High student assembly to confront a theater stage strewn with figures costumed as Iraqi men, women and children splashed with blood. It was a warm-up for the "Iraq Awareness Assembly" so no students except the actual actors saw the skit before the military guests complained to principal Susan Derse and she put a stop to it. And here comes the crucial part: no teachers or advisers were on hand or evidently even aware of the content although...