We analyze data from two universities that allowed students to replace a letter grade with “credit” on their transcript. At both schools, we observe a significant and substantial gender concealment gap: women are less likely than men to conceal grades, particularly grades that would harm their GPA. This gender concealment gap produces differential GPA gains from the policy with men benefiting nearly 50% more than women. Additional complementary data, including surveys and experiments with students and employers, suggest why women may conceal less: women may expect observers to have more negative inferences about their concealed grades.