Oh man, do I feel for this kid.
I was in the same situation at Harry Ells High School in Richmond, Calif back in the 70s. There was a white student body there, but my family was too poor and I was totally froze out of that group.
Walking home in the afternoon meant walking way outside of whole block areas because I did not want to be the only white face on those streets.
It didn't get any better until I joined the Navy at age 17 -- fully a year before I was technically eligible for graduation (I GEDed, but the high school sent me a diploma anyhow) just to get out of that mess.
I threw the diploma in the trash when I got it.
dog days...
And some people wonder why I like living in Japan.
Oh yeah...no racism in Japan....right gaijin?
;-)