be in elementary school

He left school in the third grade, when it became clear that he'd never be able to read or write beyond an elementary level.

三年级时，事情已经变得很清晰，他的智力水平无法在读写方面超出初级的水准，于是他从此离开了学校。

High school students' lack of a historical knowledge base can partially be explained by the decrease in class time spent on social studies at the elementary level.

高中生缺少基础的历史知识总体上是因为他们花更少的时间在学习基本社会学科上。

Parent's Alert is a preventative measure, to be trotted out before suspicion of drug use arises preferably when kids are in elementary or junior high school.

“家长警报”是一种预防性的措施，可以在对使用毒品的怀疑加剧-最好是孩子还在小学或初中时一之前便运作起来。