From the article:
But South Korea, among the world's most wired nations, has also seen its plan to digitize elementary, middle and high school classrooms by 2015 collide with a trend it didn't anticipate: Education leaders here worry that digital devices are too pervasive and that this young generation of tablet-carrying, smartphone-obsessed students might benefit from less exposure to gadgets, not more.
Elementary- and middle-school teachers who help raise their students' standardized-test scores seem to have a wide-ranging, lasting positive effect on those students' lives beyond academics, including lower teenage-pregnancy rates and greater college matriculation and adult earnings, according to a new study that tracked 2.5 million students over 20 years.
Seventy-four percent of elementary school teachers reported that they used free Internet resources for lessons that they flashed on computerized white boards or offered on desktops or other gadgets, compared with 65 percent who said their digital content came from commercial providers, according to a January survey by Simba Information, a market research company.
The survey found that middle and high school teachers also gravitated more toward free online content.
Teachers across grade levels are forsaking traditional resources such as textbooks for free, online, and collaboratively-created instructional materials.