As for me and my family, my daughter has struggled and struggled, but she still has poor writing skills. It's not a lack of education, or a lack of family involvement. We've been told, it's learning disabilities and problems with brain function. I don't really take offense and she's learned to let rude or snide comments just "roll off like water on a duck's back". Now, on the flip side, my son has writing skills like that of a very intelligent and highly learned college student. Not sure where he got that, but his creativity just makes me wish I was like that. His grammar is mostly flawless and an English Professor was astonished that he was only 13 when he wrote this one essay on the Civil War. I'll have to unpack it again sometime. We framed it and the comments.
