I remember doing a Photography course at my local college in the 1970's, at that time there was just one lecturer and a technician (who covered other aspects of the art department as well). I could see the gaps in his knowledge despite his qualifying at the Birmingham School of Photography, I ended up having to show other students how to print.
Years later (maybe 2 or 3 years ago) I met the lecturer by chance not realising who he was while walking my dog. we got talking and found we knew a lot of people in common, he'd studied with some friends. He admitted his knowledge had been poor, saying I couldn't have learnt much from him, these were vocational and lowish level courses (O & A level).
Of course a Degree level course has a number of lecturers/tutors who usually have strengths in different areas covering the gaps you mention. Even so I helped a member here )this Forum) maybe 5 years ago who was doing a photographic degree, the University had LF equipment but students weren't taught how to use it, so there can be gaps
Ian