Third grade is a critical checkpoint in a child's educational journey. By the end of third grade, children need literacy skills that prepare them for increasing curriculum demands in fourth grade and beyond. Students who are not reading on grade level by this point are significantly more likely to drop out of high school or fail to graduate on…

A vertical scale, in principle, provides a common metric across tests with differing difficulties (e.g., spanning multiple grades) so that statements of "absolute" growth can be made. This paper compares 16 states' 2007-2008 effect size growth trends on vertically scaled reading and math assessments across grades 3 to 8. Two patterns…