Indeed, the other thing about most new FI's is that the knowledge is recent, by the time a PPL gets "Experienced" or "suitable" its probably 4 or 5 years since they had ground instruction or passed an exam only to a PPL level.
Invariably most/some committed students may be of a technical background pehaps (and only perhaps - b4 I get flamed) an IT or engineering background, it will become the blind leading the blinded.
Some sort of Pre course ground exam needs to be put in place - and it better be bloody difficult, some students crave knowledge and can ask very awkward questions
