I got bullied for being the new kid for five years in primary school by all but three of the boys in my class, and the girls didn't really interact with us. This extended to being physically beaten when they were bored, (or being chased round the playground if I didn't want to sit and take my lumps) getting food thrown at me, getting verbally abused every day, the teachers didn't believe any of it was happening, and on one occasion I was actually invited to someone's birthday party for the sole reason that they were going to spend the day bullying me.
My response then was to comfort eat and basically cry myself to sleep every night for five years while wondering why no one believed me.
Then I went to high school and as a result of the aforementioned comfrot eating was bullied for being overweight, the only kids who were more overweight than me compensated for their overweightness by basically becoming ringleaders of the others who were bullying me. I was also very intelligent and not particularly disposed towards fighting at that point so I was somewhat easy pickings. And I was at boarding school so they had access to me 24/5 until the weekends. I had water poured on my bed, water poured on me while I was in bed, toothpaste in the hair, all my clothes thrown out the window on one occasion, more beating, more verbal abuse, isolated from the group and basically spent all my time sitting in a corner.
My response was to start writing stories in which I brutally murdered all of them several hundred different ways, which of course got me sent to the head of house for having anger issues, the teachers continued to not believe me, I became a complete recluse, developed Obsessive Compulsive tendencies, swung from the low end of the autistic spectrum right the way into 'can hardly even deal with people' became excessively paranoid and claustrophobic to the point that still a group of people larger than five makes me freak out, developed bipolar depressive disorder which continues to haunt me every second, I actually have flashbacks to my time being bullied in school which I imagine play out as practically PTSD. I had insomnia as a result of my stress levels, I continued to comfort eat of course, so my weight ballooned.
Today the only remnants are my insomnia, manic-depression, OCD, autism, paranoia and the only occasional flashback. SO I think I handled it quite well, given that other people subjected to 15 straight years of bullying either go off the deep end and shoot up the school or kill themselves.