Twice. Nanchang University is a national "double-first-class" plan to build a world-class discipline and a national "2 1 1 project" key construction university. According to the official website of the query school, the school will adjust the class every semester, and after the mid-term and final grades come out, a * * * will roll twice. The experimental class is an innovative teaching class, which is composed of students with excellent grades.