To be eligible for Princeton University's M.Eng. in Aerospace Engineering, applicants must hold a bachelor's degree in aerospace, mechanical, or a closely related engineering field. A minimum GPA of 3.0 out of 4.0 is required across eight graduate-level courses, including at least six technical courses, with no more than one grade of 'C' permitted . While the GRE is optional, submitting scores can strengthen your application . The program is designed to be flexible and interdisciplinary, allowing students to tailor their coursework in consultation with a faculty advisor.