On his sleeve his rank is that of a F/L which fits in with the Grade III Education Officer description .
On his collar VR – Volunteer Reserve and as Alex has illustrated above the badge of the Education Branch , two crossed flaming torches with a RAF eagle above and made of gilded metal . The badge was promulgated in 1940 by AMWO A 116 and was abolished on the 29 April 1948 . My reference is “Badges And Uniforms Of The Royal Air Force” , Hobart , Pen & Sword , 2000 . The book does say that the education badge should be above the VR and not below as shown in the illustration .
Best I can do !