Books that we feel 
everyone should read: 

The Adventures of Captain Underpants (series), by Dav Pilkey 
Horton Hatches an Egg, by Dr Seuss
The Lorax, by Dr Seuss
The Magic School Bus (series), by Joanna Cole and Bruce Degen
Wayside School (series), by Louis Sachar and Julie Brinckloe 
Where the Sidewalk Ends, by Shel Silverstein 
Where the Wild Things Are, by Maurice Sendak

Alice's Adventures in Wonderland, by Lewis Carroll
The Chronicles of Narnia (series), by C. S. Lewis 
The Enchanted Forest Chronicles (series), by Patricia C. Wrede
Holes, by Louis Sachar
Tales of a Fourth Grade Nothing, by Judy Blume
The Little Prince, by Antoine de Saint-Exupery
The Phantom Tollbooth, by Norton Juster and Jules Feiffer

1984, by George Orwell
A Midsummer Night's Dream, by William Shakespeare 
Animal Farm, by George Orwell
Being There, by Jerzy Kosinski 
Brave New World, by Aldous Huxley
The Count of Monte Cristo, by Alexander Dumas 
The Diary of Anne Frank, by Anne Frank 
Fahrenheit 451, by Ray Bradbury 
Frankenstein, by Mary Shelley
The Hobbit, by J. R. R. Tolkien
I Know Why the Caged Bird Sings, by Maya Angelou
The Invisible Man,  by H. G. Wells 
Of Mice and Men, by John Steinbeck
To Kill a Mockingbird, by Harper Lee

Jane Eyre, by Charlotte Bronte
Crime and Punishment, by Fyodor Dostoyevsky and Constance Garnett
Pride and Prejudice, by Jane Austen 

...and, of course, these Classics:

Compliments of PS321  
here is some recommended reading, grouped by reading level: