A recent report lists the following titles as Most Read and Most Enjoyed in secondary schools.  See the Guardian article

http://www.theguardian.com/books/2015/feb/26/jrr-tolkien-falls-off-most-popular-schoolchildrens-books-list-david-walliams-fault-in-our-stars for more information and the full report at http://whatkidsarereading.co.uk/

Most read – secondary

1.  2. 3. 4. 5.

Favourite – secondary

1. 2. 3. 4. 5.