In the United States education system, a senior is a student in the fourth year of study, either in high school or college/university). In high school, the twelfth grade is the fourth and final year of a students high school education, and the year and the student are both referred to as senior). The term "senior" can be abbreviated as "sr." in writing. Seniors in high school have the opportunity to further enhance their academic skills and prepare for their future endeavors. Senior year is also a crucial time for social and emotional development, and seniors often spend time with friends and participate in events and traditions unique to their school. Some common senior year traditions include formal senior portraits, senior field trips, class rings, senior pranks, and raising or contributing money for equipment or other things to the school as a token of gratitude and respect for the schools support.