One way I try to track how we are doing with language arts is ask my child to write a journal each week. I give her a prompt and she writes about it. I’m able to see where she is on punctuation, spelling, grammar, etc. She’s grown over the past year doing this and it’s something I think we will continue.
We use a notebook for this project. I usually send it with her during the day since it is something I want her to do without much help so I truly know what she is learning.
She has a writing project and I have a small timesaver for me. Maybe this is something that could work for your family as well.