University of California Freshmen Introductory Math Failure Rate Reaches 18 Percent in 2025-26

System-wide records document the rise from roughly 10 percent failure or withdrawal in the final year of standardized testing to 18 percent after the 2021 policy shift. Average course GPA fell from 3.18 to 2.7. Campus variation is pronounced: UC Merced recorded 36 percent non-passing while UC Santa Barbara remained at 8.2 percent. Faculty correspondence attributes the divergence to admissions criteria that no longer filter for quantitative readiness.

Primary documents include two faculty petitions signed by more than 3,000 instructors and statements from UC Davis mathematician Joel Hass. These records note an expanding spread of preparation within single sections, with office hours increasingly devoted to middle-school fractions rather than calculus. The pattern aligns with parallel outcomes at other selective public systems that suspended testing during the same period.

California state interests center on expanding enrollment access versus preserving STEM pipeline capacity. The documented cost is measured in higher remediation demand and reduced throughput in engineering and physical sciences. Counterparty effects appear in community-college transfer data, where better-prepared students continue to route around direct UC entry. No reversal threshold has been formally adopted by the Board of Regents.

Next steps hinge on the 2026 admissions cycle data release. If non-passing rates exceed 20 percent, the existing faculty petitions gain procedural weight for a testing reinstatement vote.