just my opinion but
there seems to be training available to teaching staff that is - structured, supported (by smt,line managers), well funded, and that has a direct correlation to teachers pay and career advancement.
This does not seem to be the case for IT staff, indeed 'find out on google' or 'get a book on the subject' seems to be the training available.
I worked for the civil service for 4 years in IT support and had more training than I would ever recieve in a life times work in educational establishment. Everyone makes the right noises about supporting the support staffs career, aspirations, personal and professional advancement and training but it alaways seems to come down to 'that's too expensive-how will training you up professionally benifit us-the school?'
just my experience.