i loved animal farm in year six, hated hating alison ashley in year 5 (but only because i'd already read it years before, and loved it back then)
i liked one flew over the cuckoo's nest, too. the first time i read it i was a bit confused, but i read it again the next day and loooved it.
at first I hated an imaginary life, but the more I read it, the better it gets.
I think all time best was animal farm though. And worst would probably be the Hobbit. I was the only person I knew who actually bothered to read it and it wasn't awful, but I just wasnt interested. People'd been trying to make me like Tolkien for three years by then, and I still don't, five years later. And at least I understood more than most of my friends, I agree, year 5 is too early for it.
oh, I loved to kill a mockingbird, too. but I had to study it twice - year 6 and year 9. But I still loved it after a second study, so it must be fantastic.