We’re celebrating Online Learning Day today. It’s been two decades since the first online schools and degree programs emerged. Almost a third of HigherEd students now take at least one course online. Most HigherEd students engage in blended learning, a mixture of online and face-to-face learning.
Informal and professional learning online, often in chunks shorter than courses, is nearly ubiquitous with online learning marketplaces like Udemy and Coursera and tons of open resources like Khan Academy and CK-12.
Online learning has grown more slowly in K-12 but most school districts now offer online classes (directly or through a partner). Statewide schools, operated by districts and charter schools play an important role in providing equitable access to a variety of quality learning pathways. (See the chart developed by EducationNext.)

More here.