Now I see your issue - that aspect didn't occur to me since our kids have had two-hour Language Arts blocks since first grade. It's definitely problematic if your DD has to spend two hours reading in Language Arts, especially in upper elementary. DS' 1st grade teacher previously taught GT 3rd grade so DS did go through almost her whole bookcase of mostly 3rd - 5th grade books in first grade due to completing assignments very quickly. I was okay with that for a first grader but by 5th grade the emphasis should be on writing.
By the way, as a former high school english teacher, you are likely more qualified than any elementary teacher in developing your DD's language arts skills. Perhaps if the adminstration is resistant to providing differentiation, you can get them to at least implement differentiation that you provide. This could be in the form of writing assignments for books that your DD is already reading.
