Cheryl Duckworth, an associate professor of conflict resolution and peace education at Nova Southeastern University in Florida, studied teaching about 9/11. She found that many teachers don’t address the subject at all, and those who do often take only a cursory look. “The teachers felt a real patriotic duty to make sure the students knew this event happened, but a lot of what’s being done is commemorating it or honoring first responders,” Duckworth said. “That’s valid, but it doesn’t help the kids ask the critical questions and understand the context of living in a post-9/11 world.”