升学班在英语中可以称为"prep class"或"preparatory class", 即"准备班"或"预备班". 这个词源于英语动词"prepare", 意思是"准备"或"预备".

下面是一些例句：

My son is taking a prep class to get ready for high school. (我儿子在上升学班为高中做准备。)
I'm considering signing up for a preparatory class before I start college. (我正在考虑在上大学之前报名参加一个升学班。)
Many students choose to attend a prep class to improve their chances of getting into a good university. (许多学生选择参加升学班以提高他们进入好大学的机会。)