grade school
US /ˈɡreɪd skuːl/
UK /ˈɡreɪd skuːl/

1.
小学校
a school for children between the ages of about five and eleven, usually from kindergarten to sixth grade
:
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My daughter just started grade school this year.
私の娘は今年、小学校に入学しました。
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We learned basic math in grade school.
私たちは小学校で基本的な算数を学びました。