To call the assignment a dumb move would be a colossal understatement. Perverse might be better. Utterly moronic. Sickening. Those are words that come to mind.
Students researching their posters would be searching the internet for actual ISIS propaganda, putting themselves at risk in addition to being exposed to the very propaganda that has polluted other teens too young to yet understand the full implications of what they are seeing. This assignment would be bad enough in class under supervision. But to send the kids home to work on it perhaps alone goes beyond irresponsible and into downright negligent. Just hear what this parent said: