This study of early-career teachers identified a significant relationship between upper-elementary teachers' mathematical content knowledge and their students' mathematics achievement, after controlling for student- and teacher-level characteristics. Findings provide evidence of the relevance of teacher knowledge and perceptions for teacher preparation and professional development programs.

This study investigates relationships between teacher characteristics and teachers' beliefs about mathematics teaching and learning and the extent to which teachers claim awareness of their students' mathematical dispositions. A professional background survey, a beliefs and awareness survey, and a teacher mathematical knowledge assessment were administered to 259 novice upper-elementary and 184 novice middle-grades teachers. Regression analyses revealed statistically significant relationships between teachers' beliefs and awareness and teachers' mathematical knowledge, special education certification, race, gender, and the percentage of their students with free and reduced meal status. This report offers interpretations of findings and implications for mathematics teacher education.

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Research on the attrition of teachers of color suggests that, under certain organizational conditions, they leave teaching at higher rates than other teachers. Additionally, research has identified microaggressions experienced by Black teachers. Building on the literature, we explored how racism and microaggressions may help us understand Black mathematics teachers’ attrition. We designed and administered the Black Teachers of Mathematics Perceptions Survey and found that teachers’ experiences of microaggressions accounted for most of the variance in our modeling of teachers’ thoughts of leaving the profession. These data reveal that anti-Black, racist microaggressions should be addressed as organizational conditions to be mitigated. From a critical quantitative perspective, the data reveal sociocultural and sociopolitical influences that often go unnoticed in large-scale policy work.