A new analysis argues that U.S. high school graduation rates are recovering while college-preparatory math proficiency remains far behind, leaving students to enter postsecondary pathways with gaps that can undermine success. The report from the Collaborative for Student Success says many states show graduation rates between 80% and 95%, but math proficiency is often below 50%. The mismatch suggests diplomas may be signaling readiness less accurately than before, particularly for students on college-ready tracks. The analysis notes that state exit exams are not required in most places, and graduation depends on completing required course sequences rather than consistently measuring college-ready math competence. Researchers and education leaders—including Johns Hopkins University’s Robert Balfanz—argue that raising or tightening the minimum readiness standard is the core policy challenge. For higher education systems, this is a prompt to adjust placement, remediation strategies, and early academic support, while also strengthening partnerships with K-12 districts around math readiness measures.