Im starting a new school! SCARED, please help!!!?

basically i go to a secondary school in surrey that i have it walk 25 mins to and it has 500 people but its in a bad area and really bad, i regret going there so im moving to my local secondary school and i know lots of people but im worried there not gonna wanna know me and its massive there, THERES 1800 PEOPLE! what should i do?