I can think of a few that I'm not sure qualify as hero's journey (Davita's Harp by Chaim Potok) and a few that I'm not sure qualify as well-written (The Eight by Katherine Neville.)
t edited because I looked up "Hero's Journey" and it doesn't mean quite what I thought it meant.
I can think of a lot of books like that for elementary or middle school age, but not so many for high school. (I just tried to think backs on the books that I read in high school English classes, but I realized that was useless -- my senior year, AP English, we didn't read a single book by a female author, and maybe two with female main characters.)
Would The Color Purple work?
I just read Snow Flower and the Secret Fan, Pix!
Did y'all see it's going to be a movie?
It's sad how few adult novels I can think of that have women who go through aspects of the hero journey and are alive at the end. The Song of the Lark, maybe?
Pix, lots of the YA will not be what preps them for the texts you are talking about. What about popular contemporary fiction?
How about something like The Secret Life of Bees? It has been read by higher level Nines at my school to surprising popularity, and, though it doesn't have a perfect fit for Campbell's archetype, it has lots of it.
Leah in the Poisonwood Bible? The protag in Speak, hmm, maybe?
What about Katsa, from Cashore's Graceling? Or some of Tamora Pierce's heroines?
What about the protag (blanking -- time to go to bed) from Octavia Butler's Parable of the Sower?
Sherri Tepper's Beauty?
Speaking of Sherri Tepper, I don't think I can read her anymore (although to be fair, I wasn't anyway):
[link]
Why, Connie? I just read the interiew. I've never read her books but what about her interview would stop you?