In the face of stagnant achievement and persistent achievement gaps in mathematics, school districts have enacted a variety of changes to varying levels of success. On the heels of an Algebra for All model that failed to generate desired outcomes of students, San Francisco Unified School District adopted a policy in 2014 that dramatically changed…

In 2008, the California State Board of Education voted to require all students to enroll in algebra by 8th grade. This policy initiative, yet to be actually implemented, represents the culmination of a decades-long movement toward offering algebra instruction before the traditional high school years. Nationally, the proportion of 8th grade…

In 2002/03, the Charlotte-Mecklenburg Schools in North Carolina initiated a broad program of accelerating entry into algebra coursework. The proportion of moderately-performing students taking algebra in 8th grade increased from half to 85%, then reverted to baseline levels, in the span of just five years. We use this policy-induced variation to…