Nothing of note. I did a GCSE in IT and it was rubbish, basically Facebook ethics and how to use Word.
I did not chose IT at A level even though I want to do CS at uni. This is because it is more Facebook ethics.
I remember one question on my GCSE paper was a table listing three phones and the question asked me which one had the most memory (not even specific as to whether it was RAM or Flash storage although i could infer it), what a stupid question. it was basically, which is bigger 100 or 200, also aparently examiners do not understand that usually flash memory chips come in base two divisions