The National Commission on Writing called for a reform in writing instruction over a decade ago. However, teacher preparation programs still rarely provide sufficient training in writing instruction for teacher candidates. The purpose of this study was to improve the writing instruction of preservice teachers. Participating preservice teachers (N…

The study purpose was to examine the impact of the Harvest of the Month (HOTM) program on fruit and vegetable (FV) consumption, FV preferences, other eating behaviors, physical activity and other variables related to healthy eating. A clustered randomized controlled trial was employed in 28 elementary schools. After parental consent was obtained,…

Individuals with disabilities comprise the largest minority group in the world, yet they are the most underrepresented minority group in higher education, the job market and entertainment media such as literature. This population is often underrepresented because of the overlapping physical, attitudinal and policy barriers that prevent them from…

The purpose of this study is to examine the impact of instructor-generated video lectures as means of increasing students' perceived teacher presence within the online classroom. Additionally, students' survey results were used to measure the differential value of teaching presence for instructor-generated, personalized versus non-personalized…

Open Educational Resources (OER) can offer educators the necessary flexibility for tailoring educational resources to better fit their educational goals. Although the number of OER repositories is growing fast, few studies have been conducted to empirically test the effectiveness of OER integration in the classroom. Furthermore, very little is…

The purpose of this study was to document the design, classroom implementation, and effectiveness of interactive online units to enhance science learning over 3 years among students with learning disabilities, English learners, and general education students. Results of a randomised controlled trial with 2,303 middle school students and 71…

Nationally, two-thirds of high school students are unable to read and comprehend complex academic materials, think critically about texts, and synthesize information from multiple sources, or communicate what they have learned. Without a substantial change in their academic literacy, U.S. high school students face continued academic problems in…

Given the dearth of high-quality curriculum materials aligned with the new standards (NGSS and CCSS) and low student persistence in STEM fields, we sought to develop and test a STEM curriculum that would improve student knowledge, interest, and emotions. A cluster randomized control trial was conducted to assess the impact of Speedometry, a…

Children's University (CU) aims to improve the aspirations, attainment, and skills of pupils aged 5-14 by providing learning activities beyond the normal school day. This trial focused on pupils in Years 5 and 6 (aged 9-11), and activities included after-school clubs, visits to universities, museums, and libraries, and 'social action'…

Community colleges nationwide are looking for solutions to help students complete developmental (remedial) math--a known barrier to graduation. Some are offering computer-assisted, modular developmental math courses that allow students to earn credits incrementally and move through the curriculum at their own pace. One of these modularized…

In 2010, Chicago Public Schools (CPS) was facing a dilemma--how to deliver a consistent sex education program in a complex and diverse school district. Four years earlier, the school board had adopted a policy calling for students in grades 5 through 12 to receive family life and comprehensive sex education. To help support schools in meeting this…

Background: In elementary grades, comprehensive health education curricula have demonstrated effectiveness in addressing singular health issues. The Michigan Model for Health (MMH) was implemented and evaluated to determine its impact on nutrition, physical fitness, and safety knowledge and skills. Methods: Schools (N = 52) were randomly assigned…

Climate change literacy plays a key role in promoting sound political decisions and promoting sustainable consumption patterns. Based on evidence suggesting that student understanding and interest in climate change is best accomplished through studying local effects, we developed a simulation/game exploring the impact of climate change on the…

Although American schools are required to meet civic education goals of preparing students to become active and informed citizens, high-quality civic opportunities (e.g. service learning and volunteering) are consistently less available to youth of color who are typically enrolled in schools located in high-poverty communities. The purpose of this…

In randomized control trials (RCTs) of educational interventions, there is a growing literature on impact estimation methods to adjust for missing student outcome data using such methods as multiple imputation, the construction of nonresponse weights, casewise deletion, and maximum likelihood methods (see, for example, Allison, 2002; Graham, 2009;…