The principal is in charge of the building, the students, the staff, and everyone, and everything that happens in the building. The principal must approve everything; all notices, newsletters, etc. must be approved by the principal.
The principal is a member of the Executive Committee and board of managers. He/she has one vote as a member of the board and/or Executive Committee.
Develop an open/honest relationship with the principal.
The principal should always be given time on the agenda.
The president should schedule regular meetings to discuss plans with the principal (monthly meetings are suggested;) be organized so as not to waste his/her time.