SOLVED. Book about 3 girl best friends who have to send letters to three guys at an enemy school [s]

[Yasmina]

This book was blue (if that helps). And I think it had a mailbox on the front of it. There were three girls and they hated their rival school. So to get the two schools to be friends they made everyone send letters to another person in the school. One girl got a guy who wanted to impress a girl at his school so him and the girl he was sending letters went on on "Practice Dates" And they ended up liking each other :) The other girl likes playing "Games" with her letter guy... i dont really remember what happened with them. And the third girl had a jerk as her letter guy.. I dont really remeber what happened with him either.
If anyone knows the name of the book I'm looking for would you please let me know? :) Thanks so much :) :) :)

[Cathy]

The Year of Secret Assignments

[Yasmina]

Thanks You so much!! Thats it! :) Haha, I guess the cover isnt blue :) Thank you!!!!!!