Khan Academy's mission is to provide a free, world-class education for anyone, anywhere. Our platform offers free high-quality, standards-aligned learning resources - instructional videos, practice questions, quizzes and articles - that cover preschool through early college academic subjects with a focus on math and science. We also partner directly with schools and districts in the United States to implement Khan Academy across classrooms to reach historically under-resourced communities. We are deeply committed to efficacy, there are over 50 impact studies that demonstrate how our learning model successfully drives learning outcomes. There are nearly one million monthly learners globally who spend at least 120 minutes per month on our platform, which is the usage level associated with meaningful learning gains. Worldwide, more than 140 million registered learners use Khan Academy in 190 countries and 50+ languages.