Independent research confirms the impact of Bridges® in Mathematics
An efficacy study found that Bridges Third Edition leads to meaningful gains in math achievement.
A study on the effectiveness of Bridges Third Edition
Researchers at the Johns Hopkins University Center for Research and Reform in Education conducted an efficacy study to assess the impact of the Bridges Third Edition curriculum on students’ mathematics learning. Using a quasi-experimental design, the study analyzed test scores from more than 10,000 students in 27 schools for Grades K–5 across two districts in California and Arizona.
Bridges and comparison schools were matched on key characteristics such as student demographics and prior achievement. This design allowed researchers to examine the impact of Bridges instruction on student math performance.
The study included:
Across two states:
Student learning measured with:
Key Findings
Bridges students scored higher than comparison students on state mathematics assessments, with results that are statistically significant and educationally meaningful.
Greater overall performance
across states
Bridges students scored 0.10 standard deviations higher than comparison students, reflecting meaningful gains in overall math achievement.
Gains on Nationally
Used Assessment
Bridges students showed an 8-point advantage on Smarter Balanced Assessment Consortium (SBAC) mathematics assessment, which is used in multiple states across the United States.
Improvement for Underserved Student Groups
Bridges students from families who are economically disadvantaged scored higher than similar comparison students.
Deeper Conceptual
Understanding
Bridges students outperformed comparison students in several content areas, including Measurement, Data, and Geometry (AASA) and Geometry (iReady assessment).
Recognized for evidence-based efficacy
Bridges Third Edition is recognized as meeting ESSA Tier 2 standards for evidence-based efficacy. This designation reflects independent research demonstrating Bridges’ positive impact on student learning and conceptual understanding in mathematics.
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