This episode's headline: School Prayer. The guests include Rev. DEAN KELLEY, National Council of Churches; EDWARD McATEER, Religious Roundtable; RICHARD VIGUERIE, Conservative Digest; VICTOR KAMBER, Political Consultant; Videotape courtesy of Christian Broadcasting Network. Byline: In New York: ROBERT MacNEIL, Executive Editor; In Washington: CHARLAYNE HUNTER-GAULT, Correspondent; MONICA HOOSE, Producer; MARIE MacLEAN, Reporter