Mom1589 - Good Luck at your meeting tonight!
Critter gives awesome advice. The principal is usually a recognized member of the PTO board. Some have voting privileges while others are a trusted advisor.
As presiding officer, you have a lot of control over the tone and mood of the meeting. I recommend that you warmly and graciously welcome all present members, including the principal, to the meeting then jump right into your agenda.
As for the principal speaking at the meeting, I've seen that it's typical to give him/her a spot on the agenda. I usually put it under New Business at the end of the meeting. I've also seen it near the beginning, just before the individual committee reports. Perhaps if your principal sees a dedicated agenda item for her she won't feel the need to run the rest of the meeting.
And, finally, you mentioned:
The presidents before me have let anyone in the meeting make motions and vote.
Isn't that the reason we have a board is to make the best decisions for the PTO?
Your bylaws should dictate who has voting privileges. Anyone with a vote can also make motions and seconds. While some groups might limit voting to board members, general members have valid opinions. These opinions should be heard and given weight in the decision making process. After all, the board is there to represent and serve the larger school population.
Most of all, I'd recommend that you have a copy of you bylaws right by your side during the meeting. Also print plenty of copies to distribute to attendees. If anyone questions a process you'll have your bylaws right there to answer the question for you.
And, again, GOOD LUCK TONIGHT!!! And remember to have fun too.
[ 09-12-2006, 02:00 PM: Message edited by: CrewChief ]