"调到学前班" 的英文表达是 "transferred to a pre-school class"。
"调到" 的英文表达是 "transferred to"，这里 "调" 的意思是指将一个人从一个地方调动到另一个地方。
"学前班" 的英文表达是 "pre-school class"，这里 "学前班" 指的是专门为幼儿准备的学习班。
例句：
这个学校调到学前班的学生都是非常聪明的。
The students who were transferred to the pre-school class in this school are all very smart.
这个学校的学前班教室都非常明亮，让孩子们感到很舒适。
The pre-school classrooms in this school are very bright and comfortable for the children.