Nationally, racial and gender disparities persist in science, technology, engineering, and mathematics (STEM) disciplines. These disparities are most notable at the doctoral level and are also found in the doctoral outcomes of Ronald E. McNair Postbaccalaureate Achievement Program participants (Scholars) despite opportunities designed to promote their doctoral success. Scholars from three McNair Programs were surveyed. The survey included items related to Scholars' perceptions of their McNair Program experiences, graduate advisor relationship, and experiences with stereotype threat. Scholars overwhelmingly reported their McNair Program experiences as beneficial to their STEM graduate studies and their graduate research advisors as supportive. However, Black female Scholars also overwhelmingly reported experiences related to stereotype threat. Improvements for survey items and the need for STEM education research to explicitly link educational experiences with institutional oppressions such as racism and sexism are discussed.