他上的是男女同校的学校。

He was educated at a coed high school.

《柯林斯英汉双解大词典》

他们已经同校三年了。

They have been schoolfellows for three years.

youdao

从女校毕业的女孩成为工程师的可能性是那些男女同校的女孩的三倍。

Girls who graduate from single-sex schools are three times more likely to become engineers than those who attend coeducational schools.

youdao

And the reason for this was mostly to, because we realized that the people around you, at your school, are the people who you want to look at mostly anyway.

这样做的原因主要是，我们发现，人们更乐于去了解同校生,或者身边的人的信息。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选