Took me about 30 seconds to find the following. Perhaps your Internet search skills aren't quite up to snuff. Please don't tell me I didn't document where this came from. Go to Google and find it yourself.

At the end of his first year, he was selected, based on his grades and a writing competition, as an editor of the Harvard Law Review.[18] In February 1990, in his second year, he was elected president of the Law Review, a full-time volunteer position functioning as editor-in-chief and supervising the Law Review's staff of 80 editors.[19] Obama's election as the first black president of the Law Review was widely reported and followed by several long, detailed profiles.[19] During his summers, he returned to Chicago where he worked as a summer associate at the law firms of Sidley & Austin in 1989 and Hopkins & Sutter in 1990.[20] He graduated with a Juris Doctor (J.D.) magna cum laude from Harvard in 1991 followed by his returning to Chicago.