培训学校用英语说是training school。

例句：

1、This year my mother took me to the training school of Alexander to join extra-curricular English learning.

汉语意思：今年我妈妈带我去了一个叫亚历山大的英语培训学校参加课外英语补习。

2、She personally started a training school.

汉语意思：她亲自创办了一所培训学校。

3、Sudents often go to summer school so they can ease their class low during the school year.

汉语意思：学生常常会去暑期培训学校学习，因而他们下一学年的学习才会轻松些。