My kids are really scarred for life... LOL Dd has changed schools in the middle of her 1st grade year, her 4th grade year, her 6th grade year and her 7th grade year. Ds has changed schools in the middle of his 2nd grade year, 4th and 5th grade year! By the middle of the year I mean in February.
We are military so our kids are more used to it as are the kids that they go to school with. Some times it has been easier than others, but they always make friends and do just fine. Changing schools when you are going into 7th grade should be too bad as it's when kids go to a new school anyway (most of the time) since it's a transition from elementary school to jr high.
"God put us here on this carnival ride, we close our eyes never knowing where it will take us next"
Wheel of the World by Carrie Underwood