To be fair, KS1 (where d3 is) has a nice morning where they have stories and book discussion in the classroom. But the other two activities for KS2 are two afternoons where two random authors are coming in to talk about their (frankly rubbish sounding) books, of course these books will be available to buy and some of them may even be autographed (big whup).
They did this last year, the author did nothing but school tours and is published by a company that ONLY prints books where people do talks and presentations in schools/clubs to push the books.
I HATE IT. I would rather they get parents in to read aloud/teachers read aloud/get kids to bring in fave books etc that this thinly disguised selling opportunity.