(iii) Service performed after March 30, 1962, by an individual in the employ of an educational organization, and service performed after December 31, 1971, by an individual in the employ of a religious, charitable, or other organization which is excluded from the term ???employment??? as defined in the Federal Unemployment Tax Act (26 U.S.C. ???? 3301 to 3311) solely by reason of ?? 3306(c)(8) of