Crash Course History isn't going to teach students everything they need to know about a certain topic from history, but it is a good site to reference to students so they can learn about a topic in a different way or extend their learning beyond class. Might also be a good short video to supplement a class lesson. The videos are engaging with a lot going on with lots of extra information. And more and more are being added all the time, so you can keep checking back to see if they have added a topic that you are currently teaching about. I think the best use for this site would be for students to watch and use these videos on their own time in order to add to their classroom learning.
Click here to see all of the videos offered by Crash Course History