OKAY. Words from my Dear Old Mother keep coming back to me every time I look at this discussion.
"DON'T OVER ANALYZE"
When I sent home the Talent Survey forms at the beginning of the year (you know, the form that you want everyone to fill out telling you what they are willing to help out with during the year aka The Volunteer Form), I had the teachers keep them until they had them all back. Then I put them in manilla envelopes to keep them together as classes. From there, with the help of two volunteers, we compiled a classroom by classroom list of teacher resources, as well as PTVO resources. Teachers were given a breakdown of what the parents in THEIR classroom would/could do. From there, a room-parent volunteer was chosen, given a copy of the list. When the teacher needs something, he/she can call a volunteer themselves (usually upper grades do it this way) or the teacher can call the room-parent who will A)do it themselves -or- B)call someone on the list whom they know can do it. I designed the survey to include what days and times were best for volunteering, whether or not a volunteer would be able to work at home, at the school, away from both, whether they were bakers or purchasers (I really wanted to utilize parents who had never been given an opportunity to help by providing stuff they could do at home, before or after school, whatever their schedule would allow them to do), etc. I implemented this program for the first time this school year and I will say that it has turned out to be an amazing success.
It may or may not be the answer you are looking for. I will say this,
IT WORKED FOR US