Students' third-grade reading and math tests have an 80% likelihood of
predicting outcomes in 10th grade, according to a recent study. Data from students across six states also link
students' academic mobility to socioeconomic factors.
A student's ranking in his state's 3rd grade reading and math tests
was 80 percent predictive of his 10th grade performance, after
controlling for errors in state test measurements, the researchers
found. That meant a student struggling in the bottom quarter of 3rd
graders in her state was very likely to end up performing in the lowest
25 percent of 8th graders—and to end up in the same percentile in 10th
grade. If a school district provided academic mobility one standard
deviation higher than the average of districts in its state, its
struggling 3rd graders on average improved nearly 6 percentile points on
the state rankings by grade 8 and became nearly 8 percentage points
more likely to graduate high school on time.
While the vast majority of students graduated high school, students'
3rd-grade achievement was still 25 percent to 35 percent predictive of
whether they earned a diploma in four or five years. Urban students who
struggled in 3rd grade were much less likely to graduate than those who
attended rural or suburban schools. It is surprising at how little chance low-performing
students had of changing their academic ranking within any of the districts across all six states.
Goldhaber, D. (2020). National Center for the Analysis of Longitudinal Data in Education
Research.
http://blogs.edweek.org/edweek/inside-school-research/2020/02/Academic_mobility_low.html