I don't think anyone would say "I'm proud of little Timmy, he showed those students good"
But all your friends, neighbors and work colleagues would know that it was your child. People that you see every day would know your child was responsible for countless lives ruined. It would be even worse if you lived locally to the atrocity.
Would you stay and wait for things to "Smooth over"?
Would you attend your own child's funeral?
Would you attend the funerals of the other victims?
Would you move away from the area possibly to another country?
Would you feel responsible for the deaths?