"Educators said they look forward to online content playing a greater role in the classroom but have lingering concerns. Though the online textbooks are free, they question how cash-strapped districts will pay for the infrastructure required – more computers, school-wide wireless Internet access, teacher training programs -- and ensure equal access to students from varying socioeconomic backgrounds."

Los Angeles Times - Seema Mehta - August 11, 2009 - 10 online textbooks ready for use in California classrooms