one other thing--I was really obsessing about grades/grading their work until I realized that--who are the grades really for? the parent, so that they can see how their child is doing. Well, I see every day how they are doing, why worry about assigning a numerical grade?
I tossed out grades, grades levels, and all that stuff. The only time I use grade level is when I enroll her in Awana, Sunday School, etc. Just use the one that would be her age.