I would teach this in my class though. I think it sends a powerful message, that your use of words is your ultimate power, and whether you could use it for a good power or bad. By this I mean, I would point out to my students how awful everyone treated Melinda because she was different. They made fun of her, and did not make her life any better. I would show the students that because someone is different, by bullying them you are not funny because you do not know what has occurred in their lifetime. I would also show that when Melinda finally did use her voice for good, she gained power over her biggest fear.
I just feel that this book sends out a good message and is easy for teenagers to connect with. Maybe it will do well as a summer reading book like my high school did, or maybe read in class to tie in with another story. Either way, I think it can be taught in class.