Because studies examining youth drug use often have data with a high proportion of zeros, they often do not meet the assumptions for univariate or linear regression analyses that are typically used. We demonstrate the use of zero-inflated negative binomial regression models to address excessive zeros in drug use frequency on perceptions of…

Improving graduation rates is one of the biggest missions in many universities across the country and it is surely the case on the campus of this institution. The work here presents a statistical tool box to use early academic performance as a predictor for graduation with logistic regression and machine learning techniques. The methods described…

This thesis describes how intellectual boundary spanning can be identified in the written ideas of millions of scholars, and finds that such efforts encounter translational problems which can hinder faculty careers. In particular, the work presented develops textual metrics of intellectual boundary spanning (interdisciplinarity) and field…

The educational importance of teacher self-efficacy necessitates research into variables presumed to significantly influence teacher self-efficacy. In the current study, the role of personal and programmatic variables on the self-efficacy of school-based agriculture teachers was explored. Self-efficacy was measured in five aspects of the…

A previous study examined role stress in relation to work outcomes; in this study, we added job structuring antecedents to a model of role stress and examined the moderating effects of locus of control. Structural equation modeling was used to assess the plausibility of our conceptual model, which specified hypothesized linkages among teachers'…

School leadership has been shown to exert a positive but mostly indirect influence on school and student outcomes. Currently, there is great interest in how quality leadership preparation is related to leadership practice and improved teacher outcomes. The purpose of the study was to understand the moderating influence of leadership preparation on…

The purpose of this study was to identify which aspects of mentoring contribute to intent to graduate, college GPA, and levels of thriving in a sample of 416 juniors and seniors at a public university in Southern California. A secondary interest was to determine the extent to which the contribution of the mentoring components to the variation in…

Using structural equation modeling, this study attempted to untangle the underlying mechanisms among student-faculty interaction, classroom engagement, and cognitive skills development by examining the role played by students' academic self-challenge and sense of belonging on the relationships among the variables. The study utilized data from the…

Purpose: The purpose of this study is to propose and test a model of school culture and examine data from schools in Southern California to identify educationally important aspects of teacher-perceived cultural variables and how these perceptions differentially impact school performance in K-8 and middle school structures.…

This longitudinal study used latent growth curve modeling to investigate English literacy development in a sample of Spanish-speaking language minority students from third through eighth grade. This study also compared the sample's literacy development to the entire population of California students using state standardized test data. Second, this…

This study explored whether a predictive model of student loan default could be developed with data from an institution's three-year cohort default rate report. The study used borrower data provided by a large two-year community college. Independent variables under investigation included total undergraduate Stafford student loan debt, total number…

Teachers' ratings of conflict and closeness as well as observed emotional support are known predictors of children's social functioning. Consistency in emotional support represents an emerging line of research. The goal of the present study is to understand whether the relation between the consistency of teachers' emotional support and children's…

This article presents results on how students became engaged and motivated when using digital storytelling in knowledge creation in Finland, Greece and California. The theoretical framework is based on sociocultural theories. Learning is seen as a result of dialogical interactions between people, substances and artefacts. This approach has been…

We explored the usefulness of first and second grade reading measures and responsiveness criteria collected within a response-to-intervention (RtI) framework for predicting reading disability (RD) in third grade. We used existing data from 387 linguistically diverse students who had participated in a longitudinal RtI study. Model-based predictors…

This report presents the results of a thorough study conducted by American Institutes for Research (AIR) to investigate the cost of providing an "adequate" education to California students attending public elementary, middle, and high schools. The study addresses the following question: "What is the cost of providing all California…