Education Market Research found that digital content may be reaching a tipping point. The company reported that delivery of digital products to the K-12 market grew by 43% in 2013, while nondigital options dropped by 8%.
The survey of 100 publishers found that 82% said they used online or digital to deliver supplemental materials. Print still owned 46% of all course material sales in 2013.
In addition, the supplemental market for print fell by 2.6% from 2013 to 2014, while sales of digital resources increased by about the same amount.
The study also found that schools use digital more often for classes in social studies, math, and science. Digital usage in those subjects averaged about 1.5 full days or class periods each week, according to Education Market Research founder Bob Resnick in a report in The Journal.