Question about volunteering

[alephzer0]

Time for another n00b question from AlephZer0.
I asked this before in another thread, but I think it deserves its own thread, so maybe I can get some detailed responses as opposed to the more general (although still quite good) information I received.
The question is:
What are the age restrictions for volunteering(besides the general minimum age of 13)?
I am currently a member of a High School team, for reference.
Up to now, I have heard things like safety glasses, spare parts and field reset, but I want to know the full extent of what I am allowed to do.