The school's moralism teaches students to have very rigid views about right and wrong.

moralism 由 moral（道德的）和后缀 -ism（表示主义、学说）组成，字面意思是"道德主义"。指一种强调严格遵守道德准则的学说或态度，有时带有贬义，暗示过于僵化地判断是非。