All you do is visit the site (click on the image) and you insert the web address for the You Tube video that you would like to show. When you do, it'll look like this:
All you have to do is click 'Take me to the safe view" and it'll open a new screen that looks like this:
No ads, no videos, no commercials. ONLY the video that you would like to use for instruction!
How about that for a safe and easy way? I sure hope you are able to use this at your school. It saves me for so many frustrations!