primary school
noun
1- Brit.a school where young children are taught, especially those below the age of 11〈英〉（尤指不满11岁儿童就学的）小学。
1.1
- N. Amer.a grade school, especially one covering the first three or four grades and sometimes kindergarten〈北美〉（尤指包括最初三或四级, 有时兼有幼儿园的）小学。