高年级学生

例句：

1. 1. The high school senior class is preparing for their graduation ceremony.
   高中高年级班级正在准备毕业典礼。
2. 2. The senior students are expected to take on more responsibility in the coming years.
   预计高年级学生在未来几年将承担更多责任。
3. 3. The senior students have been preparing for the upcoming exams.
   高年级学生一直在为即将到来的考试做准备。