The Impact of Internet Subsidies in Public Schools
利用1996-2000年加州学校数据和E-Rate项目申请数据，发现美国公立学校互联网补贴显著增加了互联网接入，但未对学生成绩产生可测量的影响。
In an effort to alleviate the perceived growth of a digital divide, the U.S. government enacted a major subsidy for Internet and communications investment in schools starting in 1998. The program subsidized spending by 20-90 percent, depending on school characteristics. Using new data on school technology usage in every school in California from 1996 to 2000 as well as application data from the E-Rate program, this paper shows that the subsidy did succeed in significantly increasing Internet investment. The implied first-dollar price elasticity of demand for Internet investment is between -0.9 and -2.2 and the greatest sensitivity shows up among urban schools and schools with large black and Hispanic student populations. Rural and predominantly white and Asian schools show much less sensitivity. Overall, by the final year of the sample, there were about 66 percent more Internet classrooms than there would have been without the subsidy. Using a variety of test score results, however, it is clear that the success of the E-Rate program, at least so far, has been restricted to the increase in access. The increase in Internet connections has had no measurable impact on any measure of student achievement.