6.四所“学校”。kindergarten/nursery school，primary school/element school，middle school/secondary school/high school，college/university
（1）kindergarten/nursery school：幼儿园。如：
My little nephew is going to kindergarten.
我的小外甥要上幼儿园了。
（2）primary school/element school：小学。如：
The primary school time is unforgettable.
小学的时光令人难忘。
（3）middle school/secondary school/high school：中学。如：(https://www.daowen.com)
My middle school life is rich and colorful.
我的中学生活丰富多彩。
（4）college/university：大学。如：
At last he was admitted into a key university.
最后他被重点大学录取。