Personally from where I stand I will never forgive them,as long as you're in high school I understand everyone knows what is right and wrong.
What is the response when your bully from highschool says they are sorry and now know better? Well, yeah, we were both kids but you didn't have to do that to me and I've now met you as an adult, now what? Forgiveness? Retaliation? Bygones be bygones?