Couple of details on this from me:
1. The fee for getting the exemption is $500 if your anticipated gross revenues are over $10,000. If below (true for a good number of groups), then the fee is only $150.
2. We highly recommend getting incorporated and getting the 501(c)(3) -- in that order -- for all groups.
3. Mapleton -- if your only reason for thinking PTA is for the nonprofit status, then I think you're right that it's not worth it. It's not only $800 the first year, it's also $800+ every year thereafter. Getting your 501(c)(3) on your own will take some $$ and effort in the first year, but then you've got it. The savings multiply big-time over time. (Note before I get chastised: If your group is looking to get involved in national politics or be part of the Naional PTA, then the dues could be a good investment. It is a good investment for some groups.)
4. I'd be remisss (and not myself
) if I didn't give a quick plug here for our National PTO Network. The first NPN "Expert Guide" walks groups step-by-step through the 501(c)(3) app. and incorporating, etc. There's also a nice group-discount insurance plan and a lot more.
www.PTOtoday.com/npn
Good luck,
Tim