As far as reading is concerned, many primary schools focus on a similar group of writers – mainly because they are good, and they are accessible! These include JK Rowling, Roald Dahl, Michael Morpurgo, Jacqueline Wilson and David Walliams.
I think the most important thing for primary school pupils is that they read with parents, and they read independently. It is crucial to discuss a book with someone and check on understanding. So, children reading anything is better than children reading nothing.
I used to encourage my pupils to read at least one classic novel, and there are so many to enjoy:
The Railway Children
The Diary of Anne Frank
The Secret Garden
The Little Princess
There are many ideas and different lists here:
Among my other favourite novelists for children are Joan Aiken, Michelle Magorian, Theresa Breslin and Eva Ibbotson.
This is an excellent site, which provides suggestions and reviews:
On this site, you can type in the book you are reading, and it will suggest another author:
You could also join Good Reads which is a massive resource of reviews and has a good phone app.