The school year is divided into three trimesters.

一学年分三个学期。

《牛津词典》

The end of the school year was in sight and spirits were high.

学年结束在望，大家情绪高涨。

youdao

They've worked hard during the school year and they should get some free time to have fun.

他们在这学年里一直努力学习，应该有一些空闲时间去玩。

youdao

They realize it can be difficult to balance college classes and a job during the school year.

VOA: special.2010.06.18

So I'm guessing now, i won't make you show your hands, because it's probably embarrassing, but what is the state of your dorm rooms, your shared dorm rooms, at the end of the semester or the end of the school year?

我在想,我就不叫你们举手了,这挺尴尬的,到期末或者年末的时候,你们寝室卫生怎么样

耶鲁公开课 - 博弈论课程节选

And the first year of law school was notorious for being difficult and grinding, you know, it was like that.

法学院的第一年是众所周知的——课程很难，让人难以忍受。

哥伦比亚的氛围 - SpeakingMax英语口语达人

Throughout the school year, pairs meet at the high school once a week for an hour.

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The school, which just opened its doors for the school year, was designed to be textbook-free.

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During the school year, the foundation's grants provide money help transport children to pools for lessons.

NPR: L.A. Effort Narrows Swimming's Racial Gap