Sex that is very informal kids need to learn about that stuff.
I'm sorry, I don't understand this - how is it the teacher's problem if the children he or she teaches don't know about sex? Isn't that entirely the parents' duty?
Personally, I am just disgusted by how freelance the school system is with these subjects - they wonder why they have such a problem with sex? Because they bother to flipping teach it.
I can see the appeal for making a vid on bullying, but I don't see how that will help - even after watching an instance of bullying, children are most likely to forget about what they just viewed. Believe me, I just graduated with a degree in children education - what they need is visuals, and time, and patient educators who will give them to tools to learn.
Maybe give a live presentation - have the children participate (NOT with the bullying, though

) just take them through a sceanrio, answer their questions, have them speak their mind. I think that's worth a shot. otherwise, a vid is just stating things plain and simple and not leaving much room for discussion.