"Dear Princess Celestia,"
"This week, I went on an AWESOME adventure! I met a few new cool friends, kicked the bad guy's flank, and learned a few cool things about friendship!"
"And…umm…I guess I learned about dealing with bullies and…uh…stand up for others."
"Some of the lessons I learned were, like, everypony isn't perfect and you shouldn't take some criticism so seriously."
"I learned that you should be yourself, don't pretend to be somepony you're not. Also, I believe that having friends who like you for who you are and taking care of you when you're down is the best thing anypony could imagine."
"MY TURN! I learned that even though you don't have any talent, you can still be a big help to those in need!"
"We all learned something about friendship, but I believe I learned something even more special. I learned not to grief over the past, and move on. I also learned that you shouldn't fight the world alone, and that friendship truly is magic."
"Your faithful students, Thunder Streak, Cris Cross, Pop Star, Silver Glare, Maria, and Inferno."