I'm in Grade Eight at Rocky Mountain High School.

我在落基山高中读八年级。

youdao

When I was in Grade eight, I took part in another contest and won first prize.

在我八年级的时候，我参加了另一个比赛，并获得了第一名。

youdao

Wang Zixuan, a student from Grade Eight, with little knowledge of painting, painted a beautiful night scenery on a piece of pottery.

王子轩是一个八年级的学生，他几乎不了解绘画知识，但却在一块陶器上画了一幅美丽的夜景。

youdao

The United States and Russia signed an agreement to dispose of sixty-eight tons of weapons-grade plutonium.

VOA: special.2010.04.17

you know, from going to public, or Catholic school from first to eight grade.

你知道，从天主教学校换去公立学校，从一年级到八年级

现在的孩子好可怕 - SpeakingMax英语口语达人

But Kimper itself has only 180 kids from kindergarten through grade eight, so by comparison Pikeville is a giant.

FORBES: Superintendent: Pikeville Not Canceling Junior High Basketball Season Over 100-2 Score

At grade eight there has been little gain in math, and it's been flat in reading for a long time.

NPR: Mixed Report Card for U.S. Schools

S. 9 up to grade eight.

FORBES: New York Public School Battles City Over Charter