If you have YouTube blocked in your school, you might like to take advantage of edublogs.tv; the site dedicated to educational videos. The edublogs.tv website states that users can:

Upload your own videos or simply grab them from YouTube (it only takes a few clicks!) to avoid school filters. 

Edublogs.tv is free and you should be easily able to see if it avoids school filters if you are able to view the video below:

Would love to hear how people get on with using and embedding videos from edublogs.tv.