Flight instructor requirements
I am a fast jet instructor with over 1000 instructional sorties to my name. I qualified as a primary school teacher before I joined the Air Force. I wouldn't necessarily say it helped me in any way but it certainly didn't do any harm.
Without bragging I'd say I'm pretty good at breaking things down, finding a root cause of a problem and getting results. I also find briefing to large groups very easy. I can't say if this was as a result of a four year teaching degree or if it is innate.
I realise this is a different job to what you are enquiring about but I hope it helps.
BV