中文摘要：

农村高教育水平的劳动力迁移到城镇地区的概率更高,选择性迁移在扩大城乡教育水平差距的同时也激励农村居民进行教育投资,并可能提高未迁移人口的教育水平。大学扩招意味着农村高教育水平劳动力的迁移概率增加。实证结果表明,扩招对农村居民教育投资有激励作用,使农村高中生比例上升;城镇地区大学生比例增加的幅度远高于农村地区,这主要是农村居民考取大学后迁往城镇地区的结果。选择性迁移和教育扩展导致城乡居民教育差距上升。

英文摘要：

Rural residents’investment in education increases their probability of moving to cities.Selective migration increases rural-urban education gap;it also provides incentive for rural residents to invest in education,although some residents failed in migrating to cities after obtaining more education.Empirically,we find that the increase in migration probability caused by university expansion encouraged rural residents to invest in human capital and increased the proportion of rural residents with high-school degrees.The proportion of college graduates increased more in urban than in rural areas.Education expansion with selective migration drove up rural-urban education gap.