Thanks for all your replies. Good to see that opinion is so one-sided. I think there is definitely an argument for a more structured requirement for ppl ground school and even an argument for qualifications required to teach subjects i.e. current or previously held FI certificate - there are assessed lectures as part of the FI course. Correct me if I am wrong, but I don’t think there is any specific quals needed for this? Or Something akin to a rating in order to teach the theory?