OPINION — AG — **** DUAL OFFICE HOLDING PROHIBITED **** A PERSON MAY NOT SERVE CONCURRENTLY AS A MEMBER OF A SCHOOL DISTRICT BOARD OF EDUCATION AND AS A MEMBER OF THE TEACHER'S RETIREMENT SYSTEM BOARD OF TRUSTEES. CITE: 70 O.S. 1971 17-101 [70-17-101], OPINION NO. 68-150, 51 O.S. 1971 6 [51-6] (LARRY L. FRENCH)