We have avoided skipping our daughter. The first school she entered had so many gifted children and they were ability grouped (although called other things). I realize now just how much she learned through this.

We moved and it was different, but she was in fifth grade. Kids have sex much earlier here and I am not comfortable with her being with older children. She is in advanced classes and has always done well with learning more.

She ended up one grade ahead here just based on their school cut-off date, but she is way ahead of any of them.