The first school (which) I attended was a primary school.

我第一个上的学校是一所国小。

youdao

Kids at the first school, an expensive private academy, got an average of 9.2 hours per week of scheduled, usually rigorous physical education.

第一所学校，是一家昂贵的私立学校，那里平均每周安排孩子们进行9.2小时通常很严格的体育训练。

youdao

The school is the first of its kind in Britain.

这是英国同类学校中最早的一所。

《牛津词典》

Two years ago, it became the first school in the country to join the Confucius Classroom program.

VOA: special.2010.02.04

Then news came that Dean was out of reform school and was coming to New York for the first time; also there was talk that he had just married a girl called Marylou.

然后消息传来说安被寄宿学校开除了,将第一次来纽约;,还有传言说他刚和一个叫玛丽露的姑娘结婚了。

耶鲁公开课 - 1945年后的美国小说课程节选

And John was in his first year of school, and he decided to join the running club, and we met there.

约翰当时是一年级，他决定参加我们的俱乐部，我们就这样认识了。

在马拉松认识的朋友 - SpeakingMax英语口语达人

He's spent his last two birthdays, since he started the first school, with these children.

FORBES: Going Global

They were the first school in that state to plant a school garden.

WHITEHOUSE: The First Lady Speaks on the HealthierUS School Challenge

And, in 1985, National Technological University became the first school to offer online degree courses via satellite transmission.

FORBES: Distance Learning Has Been Around Since 1892, You Big MOOC