班长 class monitor

副班长 assistant class monitor

班委会 class committee

文艺委员 commissary in charge of literature and art

体育委员 commissary in charge of sports

生活委员 commissary in charge of general affairs

学习委员 commissary in charge of studies

组织委员 commissary in charge of organization

宣传委员 commissary in charge of publicity

劳动委员 commissary in charge of physical labour