He answered the question, write a guide to settling into a new school (or something like that) but seems to have written it in the form of a letter and/or speech, using "Dear Students" as the opener and signing off, "Yours sincerely" but also using personal examples and persuasive language. How many marks will he lose for using the wrong form? Sounds like he did use well structured paragraph to give information and advice, eg. join clubs, try new subjects but may have been too emotive in parts. Basically we need to know how bad it is. He was predicted a 9 so is gutted although the rest of the paper went very well.