PTAs are corporations, and corporations are governed by laws. Only those people specified in the bylaws may sign checks. For a PTA, this means elected officers only. Most principals are wise enough to see and understand the potential conflict of interest this could raise, as well as the potential perceptions of financial manipulation or mismanagement which could affect the district itself. If the principal insists, call the State PTA office.
Help is available.
The principal insists that teachers be able to attend PTA board meetings. Our PTA has several members who sit on the site council. However, whatever decision the council makes, the principal can veto it if she does not like it. We were under the impression that this was a shared decision making process, but it doesn't feel like it . In fact, it would be a serious breach of the law if a principal tried to do that, which could place the school district itself in legal jeopardy.