We had an early release day today. One of my students was sick on Thursday so she didn't get the reminder slip in her agenda that goes home daily. However, the agenda has the county schedule in the front. A schedule of early release days was also sent home at the beginning of the year. We could leave right after the buses left today. I had to stay though until this student's mother came. The mom acted a little irritated that she "didn't know" about it being an early release day. I apologized saying that she didn't get the reminder slip since she was absent Thursday. Did I do anything wrong? Should I have personally called her and reminded her that it was early release day since the student was absent?