Abstract
ABSTRACTPurpose. The purpose of this quantitative, causal-comparative ex post facto study was to examine the impact of deploying elementary mathematics specialist teachers (MSTs) and implementing protected daily mathematics instructional time within a master schedule on student mathematics achievement in intermediate elementary grades. Persistent underperformance in elementary mathematics achievement continues despite decades of standards-based reform, signaling the need to examine instructional structures beyond curriculum and assessment alone.
Theoretical Framework. Grounded in the opportunity to learn (OTL) framework and transformational leadership theory, this study investigated whether intentional staffing and scheduling structures were associated with differences in student performance on the California Assessment of Student Performance and Progress (CAASPP) mathematics assessment.
Methodology. The sample included approximately 700 Grade 5 and Grade 6 student mathematics scores from a public school district in Kern County, California, collected during the 2023, 2024, and 2025 testing cycles. Independent samples t tests, paired samples t tests, and multiple linear regression analyses were conducted to examine achievement differences before and after MST deployment while controlling for prior achievement and demographic variables, including race, socioeconomic status, and disability status.
Findings. Results indicated statistically significant improvements in mathematics achievement for students receiving instruction from MSTs within a protected instructional time structure, with variation by grade level and analytical approach. Regression analyses confirmed prior achievement as a strong predictor of performance, and the instructional model contributed meaningful explanatory variance beyond demographic factors.
Conclusions. Findings suggest that leadership-driven instructional redesign integrating mathematics specialization with protected instructional time may enhance students’ OTL and improve mathematics achievement in intermediate grades. These results highlight the potential of systemic, organizational approaches, rather than isolated instructional interventions, to address persistent mathematics underperformance and promote more equitable learning outcomes.
Recommendations. Elementary school districts should consider instructional models that integrate MSTs with protected daily mathematics instructional time embedded within a master schedule. Future research should replicate this study throughout multiple districts and contexts and incorporate qualitative measures to examine instructional fidelity, leadership decision making, and implementation sustainability.