Parents who send IEP/504 Snapshots or intro letters are the best.
Of course, I will read and annotate every lengthy IEP/504 plan. But, having quick bullets and fun extra special interest or trigger information that can easily be reviewed regularly is incredibly helpful.
Plus they show more personality than a big collection of clinical documents.
Yes, I need to know that the student may need extra time on assignments, but I also need to know that they love monster trucks.