Spurred by a succession of reports pointing to the importance of algebra as a gateway to college, educators and policymakers embraced "algebra for all" policies in the 1990s and began working to ensure that students take the subject by 9th grade or earlier. A trickle of studies suggests that in practice, though, getting all students past…

An increasing number of urban districts are scrapping traditional high school grade structures, changing their retention policies, and devising more flexible routes toward graduation to address high dropout rates. Educators in Baltimore, Boston, Houston and Rochester, New York say they are particularly focused on the 9th grade, a year when many…