**In other words how many teachers should be on the board and how many parents should be on the board?**
There won't be a "one size fits all" response on this. Dynamics differ from school to school and board to board. At our school, we have 14 board positions; our by-laws expressly state that 3 of these positions must be filled by teachers. The remaining 11 positions could be filled by teachers theoretically as our by-laws don't prohibit it, but (to date) these positions have always been filled by parent volunteers.
Since the PTO's activities can be quite time-consuming, I can't imagine how teachers would stand for having a PTO primarily consisting of themselves as it would require them to take on all that extra work on top of their classroom responsibilities.
**If there are no parents on the board can it still be considered a PTO?**
I am curious as to what the acceptable or preferred Parent/Teacher ratio is for the Executive Board. In other words how many teachers should be on the board and how many parents should be on the board? If there are no parents on the board can it still be considered a PTO?