Dr. Christensen is recognized worldwide as an expert in learning technology. He has pioneered adaptive learning, data-driven content development, simulation and debriefing technologies.
He founded his first company, Sophus Medical, in 1997 while still in medical school. Sophus Medical was acquired by Laerdal Medical in 2002. Dr. Christensen was responsible for Laerdal's global learning technologies initiatives from 2002-2006. Dr. Christensen co-founded Area9 in 2006, which has been at the forefront of adaptive and personalized learning with more than 2000 adaptive learning products based on the Area9 technologies and millions of students using the systems every semester. Area9 Education was sold to McGraw-Hill Education in 2014 and Area9 Learning was established to focus on adaptive learning in corporate and organizational environments (later Area9 Lyceum in 2018).
Dr. Christensen was part of the McGraw-Hill Higher Education leadership team from 2011 to 2014 and the MHE Executive Leadership Team from February 2014 to 2016, where he stepped down to focus on the rapidly growing Area9 enterprises.
Dr. Christensen is on the boards of LEAP Innovation (personalized learning), Mastery Transcript Consortium, The Crown Prince Frederik Fund in Denmark and a Trustee at Brimmer & May School in Boston. He is also on the advisory board for Transcend Education, CharacterLab, Center for Curriculum Redesign at Harvard University and is on Goldman Sachs Global Strategic Advisory Group.