20个州和华府禁止校内无线设备, 研究表明它能提升学习成绩。 Twenty states and D.C. ban wireless devices in schools, study shows it boosts academic results.

包括特区和维尔京群岛在内的20个州已禁止在上学时间使用电话和平板电脑等无线装置,残疾学生除外。 Twenty states, including D.C. and the Virgin Islands, have banned wireless devices like phones and tablets during school hours, with exceptions for students with disabilities. 17个州允许使用,16个州允许各学区自行制定政策。 Seventeen states allow their use, while sixteen states let school districts make their own policies. 对17 000名学生进行的一项研究表明,禁止电话可以改善学术成果,特别是对表现较差的学生而言,并减少分心。 A study of 17,000 students shows that banning phones improves academic results, especially for lower-performing students, and reduces distractions.