When students enroll, letter grading is the default. The Credit/No Credit option is available only to students in good academic standing. Requests for Credit/No Credit must be submitted to Student Services via ExtensionGrades@ucsc.edu by the last day of the course. Please note that only Letter Grades of C- or higher are permitted to be applicable to a certificate, and for most Employer or Government sponsored (WIOA, etc.) payment programs.