If each hour of back-to-school YouTube content watched in 2016 alone was represented by a pencil laid end to end, they would stretch from California to Australia and back. Appears In Make the grade for back-to-school: 4 YouTube trends to inform your video strategy Related Data More than half of parents say that video ads from companies that address their back-to-school anxieties are more memorable to them. Watch time of back-to-school-related content on YouTube has more than tripled over the past two years. Watch time for back-to-school videos on YouTube is up more than 70% YoY in 2016. 68% of parents who watch YouTube report being open to receiving back-to-school advice from brands. 86% of U.S. viewers say they often use YouTube to learn new things. There are more learning-related videos on YouTube than books in the Library of Congress.