现在的研究是top 20%家庭的孩子很难掉下去。这也使得bottom 80%很难爬上来。倒是1%与20%之间的流动性不小。
所有跟帖:
• top 20%家庭的孩子掉下去...too easy--one bad decision could do it. -career- ♂ (486 bytes) () 05/18/2019 postreply 16:33:05
• top 20%家庭的孩子掉下去...too easy--one bad decision could do it. -career- ♂ (486 bytes) () 05/18/2019 postreply 16:33:05