The Certified ScrumMaster (CSM) exam isn’t generally difficult if you’re prepared. The open-book CSM exam covers the topics and principles covered in the study course. You have 60 minutes to complete the exam, and you need a score of at least 74% to pass. Many participants say that the CSM exam is easier to pass than the Professional ScrumMaster (PSM) certification exam, which requires a score of 85% to pass. ScrumMaster certification is good for two years, and during that time, a CSM must obtain Scrum Education Units, or SEUs, through supplemental Scrum-affiliated training and classes. If you acquire the requisite number of SEUs during the two-year period, you can submit these with your recertification application to renew your certificate. If you don’t have the required number of SEUs — or if it’s been longer than two years since your last certification — you may need to retake the CSM course to obtain a new certification.