- Lumen Learning is a startup company that provides support for open educational resource (OER) adoption. It helps address challenges like identifying appropriate OERs and assisting faculty with adapting them for their courses. - Lumen Learning was co-founded by open education expert David Wiley and education strategist Kim Thanos based on successful outcomes from the Next Generation Learning Challenges-funded Kaleidoscope Open Course Initiative, which replaced textbooks with OERs. - The initiative resulted in moving textbook costs to $0 while improving average student success rates by over 10% compared to previous years taught without OERs.