A growing body of evidence points to fractions as a major bottleneck in early math learning, threatening progress into middle and high school math. EdWeek Research Center survey results show nearly 9 in 10 educators view fractions as a foundational skill deficit, identifying it more frequently than number sense, spatial reasoning, or basic geometry. The reporting ties fractions mastery to downstream success in rates, ratios, proportional reasoning, and eventually algebra. Researchers warn students often treat fractions as separate from the number system, instead of as standard numbers that can be compared and operated on. The piece cites a 2008 National Mathematics Advisory Panel report describing fractions as the “most important foundational skill not presently developed,” emphasizing the need for both conceptual understanding and procedural fluency. For higher education teacher preparation and professional development providers, the development is a reminder that secondary math remediation may be too late—districts are increasingly turning to targeted fractions training to prevent compounding deficits.