Cutie Pie has been going to preschool camp for several weeks now. We've had a huge experience with separation anxiety as a result. The first day he clinged to me for almost 45 minutes before the teacher could pry him off of me for him to experience the two hours at camp.
We got several books from the library to read with him to help him understand that we weren't going to leave him for good, in addition to lots of talking and loving. The Kissing Hand was probably the book he related to the most. Yesterday morning was the first time he seemed truly happy to walk into the classroom. We kissed each other's left hand, just as in the book, held them up to our cheeks, he gave me a kiss and he walked right in with a smile on his face! I was elated! The other books we've been reading lately which relate to this are Caillou, The Babysitter, Llama Llama misses Mama, and Whistle Home. Each of these helped, but I think he could relate to The Kissing Hand better as there was something he could actually practice when we parted.