straight-A student 全優生；學霸
Our teacher presented the award to that straight-A student.
老師把獎頒給了那個總考A的學生。
I've been a straight-A student, model employee, and overall law-abiding citizen.
我是個優等生、模范員工和遵紀守法的好公民。

overachiever 優等生
She is an overachiever who plans to attend a top college.
她是優等生，計劃考頂尖大學。
I was raised as an overachiever, and I can testify from my own experience that overachieving does not lead to happiness.
我是作為一個優等生長大的，我深切體會到戴著優等生的帽子并不等同于快樂。

underachiever 后進生
While intelligent (with an I.Q. of 116), he was an underachiever who was quick to lose his temper.
盡管聰明（智商116），但是他卻是一個老發脾氣的后進生。

curve wrecker 學霸
"Curve Wrecker" refers to students who are excellent in their studies with outstanding academic performance.
Curve wrecker 指的是那些學習特別好，成就很優秀的學生。

transcript 成績單
You must submit your college transcript with your job application.
你需要提交大學成績單和工作申請。

International Mathematics Olympiad 國際數學奧林匹克；奧數
It was an International Mathematics Olympiad problem. As I took a lot of time to look at the notes, my skills improved dramatically.
那是道奧數題。我花了很多時間看筆記，我自己的技巧也顯著提升了。