grade in school在校成绩;年级
Fifth grade primary school小学上五年级
grade at school年级
grade primary school students小学三年级学生
Grade e school小学
First grade high school高中一年级
After high grade of school开学后就上高二年级了
second grade primary school pupil小学二年级学生
first grade primary school pupil小学一年级学生
N-VAR（有变体名词） In the United States, a grade school is the same as an . (美国的) 小学
I was just in grade school at the time, but I remember it perfectly.
我当时刚上小学，但我记得很清楚。