From personal experience, I can say that the worst part of teaching is when you can’t do your job because students misbehave—hitting each other, talking to a classmate, being disrespectful, and so on.

Walk into nearly any American school this fall and you’ll see a striking trend: phones are gone. Locked pouches. Classroom baskets. Outright bans. Three out of four U.S. public schools now prohibit ...

But underneath those thoughts is a simple biological truth: Your amygdala—the brain’s alarm system—reacts to uncertainty the same way it reacts to danger. It’s not trying to sabotage you; it’s trying ...