Education Branch 10. Colonel Clarke asked the Secretary of State for Air what is the present ratio of education officers in the Middle East to the number of education officer posts at R.A.F. stations. Mr. A. Henderson Including officers and n.c.os. acting as full-time substitutes for education officers, the ratio of strength to establishment at R.A.F. stations in the Mediterranean and Middle East Command is about 4:5. Counting only fully qualified officers of the education branch, the ratio is 1:22.