This is crazy. Kids are unpredictable and are unable to govern their emotions like an adult. My daughter got bit so bad at daycare she had the mark for weeks. Did I freak? No. Would I if she got beat up regularly...maybe..
That said, my daughter spent 1/2 day pulling the chair out from under another kid. Did his parents freak. No. Was my daughter disciplined by the caregiver and at home, yes. People need to have a reality check sometimes. Geez.