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Third Party Validation

A first-of-its-kind, nationwide study

WestEd recently published the largest study of its kind to evaluate an education technology math program nationally, including over 150,000 students between 2013 and 2016. This national-level study expands upon previously published WestEd independent validations of the effectiveness of ST Math at the district level (Los Angeles Unified School District 2013) and statewide (California 2014).

The study looked at grades 3, 4 and 5 in 474 schools that started using ST Math between 2013 and 2015, and included 16 states where complete state standardized test and demographic data was publicly available to the researchers.
LAUSD in 2013
45 Schools
9,000 Students
Grades 2-5
California in 2014
129 Schools
19,980 Students
Grades 2-5
Nationwide in 2018
474 Schools
80,000 Students
Grades 3-5

High Fidelity, High Impact

The results were especially significant at the 239 schools that used ST Math consistently (where more than 85% of students used the program and on average completed 50% of their grade-level content during the year). These high fidelity schools showed significant growth.
WestEd States
WestEd State Assessments
WestEd Students
WestEd Schools and Districts
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What are the key findings?

Schools that consistently used ST Math outgrew similar schools in statewide rank by 14 percentile points.†

WestEd Graph

ST Math’s Effect Size

When looking at the percent of students in one grade who achieved math proficiency on their state test at a given school, ST Math had an average effect size of 0.36 on statewide ranking (z-score). As a reference point, the federal What Works Clearinghouse defines 0.25 effect size and above as “substantively important.”

WestEd Effect Size
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"I’m encouraged to see that ST Math continues to show significant effects on math achievement. But I’m even more impressed with the breadth of ST Math evaluations towards evaluating every school, every year, which provide a model for other education technology companies to follow."
Tonika Cheek Clayton
Managing Partner at New Schools Venture Fund
See for yourself why students and educators across the country are taking a radically different approach to math.
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