Boy at school irritates me?

This one boy in school is very spoiled. He brags that he is smart and gets straight As. I have seen his report card, he dropped it outside of school so I picked it up to give it back to him. It was full of Cs, Ds, and Fs. He is also really rich. He wears a necklace with a dollar sign around his neck. He wears designer sunglasses to school and brags about how expensive they were. He also wears his Beats headphones all day. He pretends to have a girlfriend, but his childhood friend explained that he didn`t have one. Everyone at school hates him. In the yearbook, he signs his name with a dollar sign after his signature. Even the teachers are about to strangle him. Our social studies class lost 5 points on our finals because the boy was whispering the answers during the test. He likes to eavesdrop on other`s conversations and he uses students' ideas as his own. One time, I was writing a story for writing class, and my story was similar to the boy`s. He was sitting next to me when I was working on the story. Again, I try to see the good things in everyone and I try to be a reasonable person, but this boy is pushing me over the edge! He is the reason I want to skip school most of the time and he makes fun of my American accent in my Japanese. Our school is a international school, he heard me speak in Japanese when I ordered something from McDonalds. Can anyone tell me how I can confront with him or learn to ignore him?