Absolutely. Someone is responsible for explaining things to kids, and it isn't the school. It all starts with the guardians, whether it be parents, or other relatives.
My 4-year-old granddaughter can read and write, and she is not yet in public school. Her mom takes her to the library, they read books together. Grandma and Grandpa assist. She is having a little trouble writing lower case at the right size relative to upper case, but she can read. She has a leg up on those 17 & 18 year old Detroit kids. They can't learn in the 17 years they've been on Earth, then they are not smart, they are stupid (and I don't mean retarded).
You have to do that .
You need to make sure that once she starts she is in all AP classes otherwise she will learn nothing .
I even forced the school to send my daughter to the jr college to take the classes they did not offer in AP. She ended up with a bunch of credits .
You have to do it now or home school
Mine went to regular school because my husband did not want her home schooled but I basically home schooled her anyway.
The writing will improve , that is something they don’t have the dexterity to easily do at that age . Push the reading and the math . Mine could read , add , subtract and count her lunch money before she was in kindergarten .
She is grown now