It's hard to beat TedEd for the best educational YouTube channels to frequent. Everything from lesson ideas to professional development opportunities and more can be found here. Characterized by its incredible animation style, the stunning videos on TedEd currently have over 6 million subscribers and counting.
Common Sense Education
If you've visited Edutopia's website often, you know it's a gold mine of information for today's teachers. Their YouTube channel is no different.
Big Think is a leading source of expert-driven and actionable educational content. Explore thousands of videos featuring experts discussing topics aimed at getting us to think differently about the big ideas and core skills that define knowledge in the 21st century.
If you saw issues of this amazing and timeless publication in your home growing up, then you know just how strong National Geographic has been going. Their own educational YouTube channels feature content-specific videos on Nat Geo Wild and the super-popular National Geographic Kids.
Expert Village is a cool channel for the STEM crowd. On this channel you can explore and view tutorials on most everything—literally most everything. It's one of the best watch/learn/do channels YouTube has to offer. Alternatively, teachers who enjoy quirky and hilarious educational videos also often enjoy what Buzzfeed has to offer.