So many people are teaching what I would consider 'advanced' subjects. Our team teaches some of these, but you also must remember that some basics are in order for most students.
As the mechanical mentor, I teach classes in
1. Materials
2. fastening and joining.
3. pneumatics
4. robot systems
5. How we design.
I'm considering adding a course in 'tools' because surprisingly, many kids don't know the names and uses of tools nowadays.
The electrical mentors on the team also teach classes in their electricity and electronics and programming.
Our courses are free on our web page, as .pdf but if you'd like the powerpoints to adapt them to your team, just give me an email.
http://www.pantherrobotics.com/resources.html
note: very slow website, but it does come in eventually.