Category IV refers to a classification system used in various fields, including education and healthcare, to denote a specific level of complexity or severity. In education, it may indicate advanced courses or programs that require a higher level of understanding and skill. In healthcare, it can refer to a level of medical conditions that necessitate specialized treatment or intervention. In the context of hurricanes, Category IV signifies a storm with sustained winds ranging from 130 to 156 miles per hour. Such storms can cause significant damage to structures, uproot trees, and lead to widespread power outages, making preparedness essential for affected areas.