Diane found CK-12 Foundation:

• Slightly improves attainment“It's difficult to determine attainment because there is no check-for-understanding. quiz or questions.”
• Slightly builds student knowledge“The "A" students would do the work and retain the knowledge but the "C" and "B" students didn't”
• Slightly improves teaching efficiency and productivity“It”
• Slightly reduces teacher workload“I could not figure out how to verify that students finished their assignments with correct answers”
• Moderately saves school money“My school is paying $80k for a different virtual curriculum that is challenging for my middle school students. They like CK12 better!”