美国的高中生活（american high school life）
　　high school in america， after middle school comes high school， which includes grades 9 through 12. students are required to take certain subjects like english， social studies， math， science， and physical education. in addition， they choose among elective subjects to complete their high school education. electives include subjects in technology， music， art， and foreign languages.
　　each student in the school has their own locker for books and personal items. this convenience saves students from carrying textbooks， and allows students a small space they can decorate with posters and favorite objects.
　　cheating in any form is strictly prohibited in american schools. and in fact， high school students usually don‘t cheat. a student caught in plagiarism， forgery， or copying another student faces severe discipline， even expulsion.
　　school activities each school holds certain yearly activities for the entire school body， such as homecoming， prom night， holiday celebrations， etc.
　　homecoming is celebrated each fall， usually on a weekend， and events leading up to it may last all week. while homecoming is celebrated differently at each school， it usually includes a parade and the crowning of the homecoming king and queen， and ends with a football game and school dance.
　　the prom is a formal dance for students in grades 11 and 12， and is generally anticipated as the most important social event of the school year. it can also be a time of anxiety， as boys have to work up the courage to ask a date to the prom， and girls hope the right boy invites them. these couples dress in formal clothes — girls in long gowns，