Yes, I was. Not as severely as many other people, but as I was having problems at home as well, along with being a sensitive person in general, it affected me very negatively.
It started out as me being left out a lot - my "friends" would always deny having any plans together, then later discuss stuff they did after school or during the weekends. Later they started to leave me out at school as well, by sitting so that I would end up alone or leaving me behind (such as leaving the lunch room/toilet/changing room/library/etc. without waiting for me or even telling me). A bit later on, as other people in my class started calling me names and spreading rumours about me, I found out that my "friends" just went along with it. To my face they would say they have my back, but when the other classmates were involved, they turned against me. Basically, throughout the last couple years of school I was told I was a loser, angst-y teenager, embarrassing, disgusting, and so forth. One time, at a party, someone I thought was a close friend of mine slapped me in the face (very hard).
I hated myself at this time. My teachers were no help and my grades dropped dramatically. I gained a lot of weight and had a plethora of negative cognitive symptoms as a result of everything. I felt unable to discuss what was happening to my parents, as we would fight about my grades and my lying (I started to lie to cover up how I was feeling and how badly I was doing in school), and I was embarrassed of being bullied. As a result, I graduated with much lower grades than I know I would realistically be able to achieve. Furthermore, I continued to be depressed after I moved away to uni (even though moving away to another city and away from everything did help tremendously). My grades continued to be bad, my new friendships and relationships suffered, and I undertook a lot of unnecessary risks. Consequences of these risks just made me feel more negatively towards myself.
I graduated from high school about four years ago. I still suffer with mental health issues, which negatively reflect on my daily life, despite talking to therapists and improving my relationship with my parents. Right now, I'm back in a more negative head space, but thankfully am able to realise this and act on it, unlike before.
Also, I've mostly forgiven to those who bullied me (despite none of them ever apologising to me!); instead, I'm just focusing on myself and becoming the person I always wanted to be. Anger eats you like no other.