Private schools may submit a P.O. provided it is signed by the principal of the school and the owner(s) or if it is a board governed school, by the president of the board. Submitting a P.O. Does not guarantee acceptance of the order. Non-public or non-charter schools who have shown to be unreliable in paying their bills in a timely manner may be placed on a "cash basis only" status and will not have their P.O.'s honored.