Anxiety, one of the most common underlying causes of challenging student behavior, typically goes undiscovered and unaddressed through school-based behavior supports. Jessica Minahan and Stuart Ablon combine their expertise as a behavior analyst and a psychologist to outline how best to support students whose anxiety leads to challenging behavior. They describe the role of anxiety in challenging behavior and introduce skill-building approaches that help students develop the skills they need to succeed. These approaches can help teachers analyze skill deficits in students with anxiety, identify strategies to prevent anxiety from escalating, and build skills by combining opportunities to practice problem solving with specific strategies to manage anxiety.