It seems like you might be referring to a classification for university degrees in the UK, where a "2:1" (Upper Second-Class Honours) is a common requirement for many graduate programs and job applications. A 2:1 is typically awarded to students who achieve an overall score of 60% to 69% in their coursework.
If you need information about preparing for exams, specific subjects, study techniques, or anything related to achieving a 2:1, feel free to ask!