Kissing Shakespeare by Pamela Mingle.
I read this one in a day. Miranda, a young actress whose parents are Shakespearean actors, struggles in her school play of The Taming of the Shrew. The first performance of the play does not go well for her and before she can escape the school and go home to sulk fellow classmate and actor, Stephen whisks her away to sixteenth century England. There she must rescue the young William Shakespeare and save history. This book offers a great blend of fact and incite into the time period, romance, and mystery.