Reddit mentions of The Chrysalids (New York Review Books Classics)

For that particular class, I believe the assigned reading was:
>* Wastelands - John Joseph Adams

• The Crystal World - J. G. Ballard
  
• Childhood's End - Arthur C. Clarke
  
• Do Androids Dream Of Electric Sheep? - Philip K. Dick
  
• World Made By Hand - James Howard Kunstler
  
• It's Only Temporary - Eric Shapiro
  
  I also took a class on dystopian literature, which included:
  >* The Handmaid's Tale - Margaret Atwood
  
• Fahrenheit 451 - Ray Bradbury
  
• Neuromancer - William Gibson
  
• Brave New World - Aldous Huxley
  
• The Children Of Men - P. D. James
  
• This Perfect Day - Ira Levin
  
• Dark Mirrors: Dystopian Tales - John Walters
  
• What Came After - Sam Winston
  
  Others I could recommend:
  >* Lost Horizon - James Hilton
  
• A Canticle For Leibowitz - Walter M. Miller
  
• Lord Of The Flies - William Golding
  
• The Iron Heel - Jack London
  
• The Running Man - Stephen King
  
• Armageddon's Children - Terry Brooks
  
• The Chrysalids - John Wyndham
  
• The Time Machine - H. G. Wells
  
• 1984 - George Orwell
  
• Pretty much anything written by Kurt Vonnegut

You mention Atwood but I'd like to put The Handmaid's Tale and Oryx and Crake out there as well. Octavia Butler's Parable of the Sower is a great one as well.
One I read when I was quite young and I still have vivid mental images from it is John Wyndham's The Chrysalids.
Also... I am saving this for all of the other suggestions!

don't look now

the big clock

the chrysalids

warlock

of those, warlock was the best.

The Crysalids - John Wyndham

You might be able to dig for some cheaper. I'm sure when I got my copy it was quite cheap. Really wonderful book to read. I actually list John Wyndham as one of my favourite authors, his books are easy going and some considered classics. If you like this one, The Day of the Triffids is another great one.

Also, I haven't got around to reading the Enders Game books, but my partner thinks they're great. We got the books for christmas so planning on reading those fairly soon.

If you fancy a giggle, try some Terry Pratchett books :) I hope you enjoy whatever you decide to get!

If you like sci-fi, there's a fantastic book by John Wyndham called "The Chrysalids". Amazon has a good summary that doesn't give too much away. It's beautifully written and if you're like me you'll finish it in one sitting because it's so interesting.