Will a GoblinOrder of the Phoenix alliance materialise in Book 6 and what effect will this have on the Potter world? Gareth Rosser, Ysgol Gyfun Gymraeg Plasmawr, Cardiff

Would Harry swap his magical powers for his parents? Isobel Hall, Hazelwick School, Three Bridges, West Sussex

How do you plan to solve the Harry-Ron-Hermione love triangle: whose heart is going to be broken? Rhys Owen-Williams, Dyffryn school, Port Talbot

Harry is a Cinderella-type with an awful step family who comes good at the end. He lives in a castle. He has stones, mirrors, potions and magic to protect him. Are your fantastic novels fairy tales or myths? Aisling Lynch-Kelly, St Peter’s Catholic primary school, Hinckley, Leicester

In the Harry Potter series there is always a battle between good and evil, but is there actually any idea of a divine figure or religion for wizards just as we have God and the devil, for instance? Lucy Spurrell, Altrincham grammar school for girls, Cheshire

Why did you choose owls as the magical world’s messenger? Natasha Denham, Clifton high school, Bristol

You have said Hermione reminds you of how you were when you were young. Who does Harry remind you of? Sinead Treanor, St Edmund’s school, Wolverhampton When Sirius Black is killed in Harry Potter and the Order of the Phoenix, what happens to Buckbeak the hippogriff? Robert Emmet, Shimna Integrated College, Newcastle, Northern Ireland

Knowing how much the characters mean to me and take on an independent life of their own, I would imagine it is the same for you, so I would like to ask you how you feel when you kill off the main characters? Alex Isaacs, Angmering school, West Sussex

If you woke up in your bed at home now to find Harry Potter was all a dream, would you still want to write the books? Aoife Cantrill, Perse girls junior school, Cambridge

Will you write any more when Harry leaves school? Clara Lilley, Hartsholme primary school, Lincoln

Looking back, would you change anything about any of the books? Nicole Shearer, Wallington high school for girls, Surrey

As the Harry Potter series has been so incredibly successful do you ever feel pressurised by expectations while you are writing? Sophie Bell, Walthamstow school for girls, London borough of Waltham Forest

I like to write my own Harry Potter adventures. How do you feel about others writing stories based on your characters? Peyton Goddard, Askern Spa junior school, Askern, Doncaster If Harry Potter had not been a success, would you still have tried to make it as an author? Rhys Parry, Prestatyn high school, Denbighshire

When is Book 7 likely to be published and what are your feelings towards the forthcoming end of the books? Claire Lehane, the BRIT school, Croydon If you were to buy a wand from Ollivanders, what would it be made of and useful for, and what should this tell us about you? Emma McGinnity, Loreto grammar school, Altrincham, Cheshire

If you hadn’t written the Harry Potter books, what sort of book would you like to have written? Jenny Essery, Aldersbrook primary school, London borough of Redbridge

As a child, which author’s press conference for which book would you have longed to attend? Daisy Mulcahy, Omagh Academy, Co Tyrone, Northern Ireland If you had come to Hogwarts at 11 and put on the Sorting Hat, what would it have said about you? Claire Crawford, Neston primary school, Wiltshire

I love writing fiction and poetry and find it really easy, but writing non-fiction difficult. Did you have the same problem at school? Why do you think I find it hard? James Middleton, King Charles primary school, Walsall