YouTube Edu: sub-section of YouTube that contains high-quality educational content.
YouTube Schools: is a network setting that, when implemented, allows your school to access the educational content on YouTube EDU while limiting access to non-educational content on YouTube.com.
YouTube Teachers: a how-to site that shows you how to use YouTube in the classroom.
With the Video Editor, you can:
Combine multiple videos and images you've uploaded to create a new video
Trim your clips to custom lengths
Add music to your video from a library of approved tracks
Customize clips with special tools and effects
You can get to the Editor at http://www.youtube.com/editor.
Using these tools, you can put together clips to create new videos and publish them straight to YouTube with one click.