grade school 
noun North American
An elementary school.From grade school to high school, learn where money comes from, how to save, and the power of credit....
- He threatened teachers all the way from grade school up into high school.
- In all of grade school and high school, I had only one male teacher, although I liked him.
Derivatives
grade schooler
- The film's science is so absurd that even a grade schooler would be able to pick it apart.
- Not only grade schoolers, but high school students and adult workers deserve time for the kind of leisure that fosters creativity and sustains a lifelong interest in learning.
- Thousands of students had come out, and some grade schoolers were there in the front row.
- obstant
- obstetric
- obstetrical
- obstetrically
- obstetrical toad
- obstetrician
- obstetrics
- obstinacy
- obstinance
- obstinancy
- obstinate
- obstinately
- obstinateness
- obstination
- obstipation
- obstreperous
- obstreperously
- obstreperousness
- obstruct
- obstructedly
- obstructer
- obstruction
- obstructionary
- obstructionism
- obstructionist