OPINION — AG — ** DUAL OFFICE HOLDING ** A MEMBER OF THE BOARD OF EDUCATION OF A SCHOOL DISTRICT MAY NOT CONCURRENTLY SERVE AS A MEMBER OF A METROPOLITAN PLANNING COMMISSION ESTABLISHED PURSUANT TO 19 O.S. 1971 863.1 [19-863.1] CITE: OPINION NO. 72-127, 51 O.S. 1971 6 [51-6], OPINION NO. 70-228 (JOE C. LOCKHART) ** SEE OPINION NO. 92-583 (1992)