Okay, so it's not summer... yet. But, as students of the English Language, you should read anything and everything you can lay your hands on.
Of this list, I'm currently reading The Information, which just happens to include an interesting chapter on early printers and dictionary makers, the names of whom my A2s will recognise. It's got some cool stuff on codes and the transformation of the world by communications technology too.
The list ends with Kurt Vonnegut, of whom you should read everything, because he's funny and clever and fun and wise.
10 Essential Books for Thought-Provoking Summer Reading
http://www.theatlantic.com/life/archive/2011/05/10-essential-books-for-thought-provoking-summer-reading/239657/
10 Essential Books for Thought-Provoking Summer Reading
http://www.theatlantic.com/life/archive/2011/05/10-essential-books-for-thought-provoking-summer-reading/239657/