Why does the Diagnostic Assessment specify content through Grade 9? Why that grade and not another?
Generally speaking, most states mandate that all high school graduates receive instruction in math through Algebra. At the same time, with Algebra being conceived as a strand that begins in kindergarten, it’s not clear to say that KeyMath content culminates in Algebra. So, we identify that the content contains material through what’s commonly viewed as grade 9 level material. This is generally considered the point at which the foundations of math are completed and students who move in math begin to explore specific areas of math with coursework in geometry, algebra, trigonometry, etc.
