High school seniors are students in their final year of high school, typically around 17 to 18 years old. This year is significant as it marks the culmination of their secondary education, where they prepare for graduation and transition to the next phase of their lives, whether that be college, vocational training, or entering the workforce. During their senior year, students often participate in various activities, such as prom and graduation ceremonies. They may also take advanced courses or exams, like the SAT or ACT, to enhance their college applications. Senior year is a time of reflection and planning for the future.