group is changing.

For our daughter, it was 5th-6th grade when the 2-3 girls she had been best friends with since 1st/2nd grade pretty much turned on her. It was like they were all of a sudden too cool and too popular to be our daughter's friend. So there was the rejection, but also the "mean-girl" stuff.

My wife was like the super school volunteer, room mom, PTO president, etc. She was at the school a lot and as a result had a good relationship with teachers and admin/staff. The school counselor at the elementary school at the time when this all happened told us we needed to watch the movie "Mean Girls". She said "you need to watch that movie... don't let your daughter watch it... but you watch it." Then she said "that movie is how it really is for these girls at school".

We ended up pulling her out of school for the last third of her 6th grade year. It really helped her stabilize. We debated whether to put her back in the public schools. The next year was the start of middle school. Since there were two elementary schools feeding into the middle school, we decided to give it a shot on the hope that she would meet new kids and make some new friends. It worked, but wasn't perfect. She joined the choir and excelled at singing. There was one member girl from the other ward in our town who came from the other elementary school. They already knew each other, but became better friends.

Good luck finding what is best for your daughter.