This paper provides evidence on the effect of local prescription opioid use on academic achievement of 3rd-8th graders between 2009 and 2018. Using county fixed effects models, I find that when counties have higher levels of prescription opioid use, students score lower on standardized assessments two to three years later, with variation by…

The goal of Smithsonian Science for North and South Carolina Classrooms was to provide teachers with ongoing, differentiated professional development and research-based curricular materials to improve elementary student achievement in science, mathematics, and reading. This work used an inquiry-based science curriculum, Smithsonian Science for the…

Montessori is a highly individualized pedagogy that prioritizes following each child's individual interests over standardized test scores. This quasi-experimental study compares groups of Montessori students (treatment groups, N = 535-710) with control groups of non-Montessori students, matched through the simple matching method, which controls…

This study examines whether family income in early childhood is related to achievements of Israeli students in standardized tests at primary school. We analyzed data from the Israeli censuses of 1995 and 2008, which include information on family income and socio-economic background of children along with data pertaining to their achievements in…

This dissertation investigates the impact of attending a STEM-designated elementary school on students' math, ELA (English Language Arts), and science achievement and growth scores. As technology continues to advance in education, educators are exploring innovative instructional methods. With a concerning decline in math proficiency nationwide,…

The purpose of this quantitative, ex post facto study was to determine the difference in students' LEAP ELA achievement scores in grades 3-5 based on the teacher's level of dyslexia knowledge. This study used the Phonological Deficit Theory (PDT) and the Criterion Referenced Assessment Theory (CRT) as its foundation. PDT describes the levels of…

Schools are tasked with ensuring that students with disabilities are educated within general education classrooms, alongside non-disabled peers, to the maximum extent possible. This study investigated the influence of classroom placement on academic achievement in reading and mathematics for a group of students with mild learning disabilities, who…

How does the act of explaining influence learning? Prior work has studied effects of explaining through a predominantly proximal lens, measuring short-term outcomes or manipulations within lab settings. Here, we ask whether the benefits of explaining extend to academic performance over time. Specifically, does the quality and frequency of student…

Recent work has demonstrated that having students study worked examples and answer self-explanation prompts as part of their problem-solving practice improves learning on researcher-developed measures of mathematical proficiency. However, little work has been done to date to investigate whether these benefits translate to improvements on the types…

Purpose: A growing trend in instructional improvement efforts is the use of formative assessment informed by research-based developmental trajectories of how students gain deeper understanding of subject matter content over time. This article reports the findings of a large-scale experimental study of an innovative mathematics professional…