While I was in grad school last year, I took Michelle McGann's YA (Young Adult) Publishing class. In this class, we read and discussed many novels written for teens. We also broke into groups--pretend publishing companies--and worked with manuscripts on editing, marketing and promotion, and book design.
After I took the class, another student suggested I submit my completed YA novel My Curious Adventures with a Witch to the YA Publishing class, so that rather than paying an editor to work on my manuscript, I'd give students an opportunity to supply me with editorial and marketing feedback. So this past term Michelle shared the manuscript with her class.
I found out yesterday that my manuscript was so popular that three out of the six groups (pretend publishing companies) chose my manuscript to work on! I'm so looking forward to revising it...and I'll likely share the next draft with my new writers group. I hope that after the next revision, literary agents will have a similar reaction to that of the students.