Okla. Stat. tit. 19, § 19-1707: Organization of board

The board shall elect a chairman. The chairman shall have all

the rights and privileges as any other member of the board,

including the right to vote on questions. Each member of the board

shall be entitled to cast one vote. The members shall elect a vice-

chairman from among them and develop such other rules or procedures

as may be necessary to ensure the orderly conduct of business. The

vice-chairman shall serve as chairman during the absence or vacancy

of the chairman. When a vacancy occurs such position on the board

shall be considered vacant until the vacancy is filled in the manner

provided by law. Regular meetings of the board shall be set by the

board. Special meetings shall be held at the call of the chairman

or any two (2) members of the board. A majority of all the members

of the board shall constitute a quorum and have the power to

transact business. Any official action of the board in adopting or

revising the district budget or any portion thereof shall be

effective upon the approving vote of a majority of all board

members.