Certainly, there are a lot of exceptions but this system can be considered as a kind of social divide.

divide 在这里是名词，本义是"分割、分界线"，引申为"分歧、隔阂"的意思。social divide 指社会中不同群体之间的差异或隔阂，常用来描述贫富、教育、机会等方面的不平等现象。