prep school
noun [ C ] uk/ˈprep ˌskuːl/ us/ˈprep ˌskuːl/
预备学校（在英国通常指为进入公学作准备的私立学校，所收学生为7至13岁的儿童，尤指男孩;在美国指为11岁以上的孩子上大学作准备的私立中学）
in the UK, a private school (= a school paid for by parents not the government) for children, especially boys, between the ages of seven and 13, who will then usually go to public school and in the US, a private school for children over the age of eleven that prepares them to go to college