A dress code is a set of rules about what people should wear in certain places or events. For example, schools often have dress codes to ensure students wear appropriate clothing, like uniforms or casual attire. This helps create a focused environment and reduces distractions. In workplaces, a dress code might require employees to wear business attire or casual clothes depending on the company's culture. Following the dress code shows respect for the organization and helps maintain a professional atmosphere. Overall, dress codes guide people on how to present themselves in different settings.