I feel a bit more "armed" thanks to all your recommendations, and feel the need to call the district 504 "intervention counselor" as she/he is called here.
Someone asked if DD has a 504 ADHD or anxiety. It's ADHD inattentive type only at this point, but she certainly has a high level of anxiety about her disorganization at school. Several times last year she experienced screaming panic fits in the car when she realized that she had forgotten something for class. She insisted that the teacher would "kill her" if she didn't bring it in. Her three 5th grade core teachers were the sweetest women on the planet and allowed her to bring things in later (or be emailed). They never witnessed the meltdowns as she only does it within the family. It is so painful to see her worry so much.
Good idea calling the 504 interventionist. Ours is called something different--but she has been instrumental in getting bases covered.
As for anxiety, it's frequently co-morbid with ADHD. I would expect the 6th grade teachers to be less accommodating (at least without 504 accommodations) in regard to accepting late work--that's where extra time can help. I'd mention that historically teachers have been flexible about these issues, and your concern is that the increasing MS demands will interfere with DD's success unless this is accommodated.
