[Magic.]

I was really badly bullied when I first switched to secondary school (age 11) and it made me really wary of people. Even when I switched a year and a half later to a nicer school, with nicer people, I was super super shy because I thought they were just being fake nice so they could hurt me like had happened before. I think I missed out making a lot of friends because of it.
I guess it affected my grades a little too. I was bullied for being a nerd, i.e. I didn't the tiny amount of work we were set ... so at my new school I always made sure I didn't do any extra in case people started saying the old things to me. I probably would have done better in school if I hadn't been so wary of people judging me ...