<<<Hugs>>>
My DD9, fifth grader started "shutting down" the end of third grade. I am unfamiliar with the test you mentioned but it defnately sounds like your daughter needs something more. It has taken a good part of the last year with my DD home to see that love of learning really return. Most homeschoolers say a month for every year of public school to unschool.
I would really talk to your husband about trying homeschooling if it is something you want to do. My husband was very hesitant and we actually started over the summer that year to see how it would go. It took him most of the first year to really get on board with it and see how much better it was working for our kids.
