grade school
US /ˈɡreɪd skuːl/
UK /ˈɡreɪd skuːl/
1.
escola primária
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.
Minha filha acabou de começar a escola primária este ano.
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We learned basic math in grade school.
Aprendemos matemática básica na escola primária.