Announcing examinations for agricultural extension specialist, $7,040 to $10,800 a year (grades GS-12 through GS-15), specialised fields, 1, program leadership (GS-12 through GS-15), 2, educational research and training (GS-12 through GS-15), 3, subject-matter specialization (GS-12 through GS-14), 4, educational media (GS-12 through GS-14), announcement no. 4B.