While everything the video was talking about is correct, this also only scratches the surface of what is going on (http://en.wikipedia.org/wiki/Redox). Science at school has to go into much more detail to prepare you for when you chose chemistry as your topic for University.

A comparable video that actually gives all that detail is very hard to do (if it's at all possible) and it's also likely to be very boring - unless you are into chemistry at which point you don't need a video like this in the first place because the books are perfectly fine for you (they were for me and I have nothing but interest into chemistry - no education aside of what you'd get in High-School).

But why does school have to prepare you for every college there is, including those you aren't going to attend?

95% high schoolers aren't going to any college requiring chemistry. Why not teach the fun and memorable flame to them, instead of boring chemistry flame they wouldn't understand or remember?

Why does it have to be boring? A good science teacher and method can make all elements fascinating. I'd reference the Feynman lectures as an example of this.