An A- in a math class, particularly when the grading scale was not clearly communicated, raises concerns about its impact on graduate school admissions. Graduate committees typically convert transcripts to a common grading scale, where an A- is recognized as slightly below an A but still above a B+. While an A- translates to a GPA of 3.75 compared to a 4.00 for an A, it is generally considered acceptable for meeting minimum admission standards. Admissions committees prioritize the overall academic profile, including course rigor, research experience, and recommendation letters, rather than fixating on individual grades. As long as the GPA remains above a certain threshold, an A- is unlikely to significantly hinder an applicant's chances for graduate school.