Stackup is a Denver based education technology company empowering digital learning. Stackup is an artificial intelligent (A.I.) based system that measures and rewards online reading & engagement, giving educators the ability to unlock the learning benefits of the entire web. Stackup’s A.I. system tracks time when students are actually reading and engaged online, calculates the reading level, and subject area of every article on the web. Students can read anywhere and earn badges in the process, while educators receive real time analytics. The Stackup Content Library curates Open Educational Resources (OER) by grade level and subject area making finding great content fun & easy . To date, Stackup has measured the grade level of 1,000,000+ articles, at 600,000+ websites, and is being used in classrooms worldwide.