The authors evaluated the effects of P-SELL, a science curricular and professional development intervention for fifth-grade students with a focus on English language learners (ELLs). Using a randomized controlled trial design with 33 treatment and 33 control schools across three school districts in one state, we found significant and meaningfully…

Given limited funding for school-based science education, non-school-based programs have been developed at colleges and universities to increase the number of students entering science- and health-related careers and address critical workforce needs. However, few evaluations of such programs have been conducted. We report the design and methods of…

Practical skills are important for the employability of biosciences graduates; however, first year science undergraduates often struggle to adapt to university practical classes, affecting skills development and decreasing their enthusiasm for laboratory work. This study describes the effects of introducing online multimedia practical support…

As secondary students' interest in science is decreasing, schools are faced with the challenging task of providing adequate instruction to engage students--and more particularly the disadvantaged students--to learn science and improve their science inquiry skills. In this respect, the integration of Web-based collaborative inquiry can be seen as a…

Typically, teachers use tests to evaluate students' knowledge acquisition. In a novel experimental study, we examined whether low-stakes testing ("quizzing") can be used to foster students' learning of course content in 8th grade science classes. Students received multiple-choice quizzes (with feedback); in the quizzes, some target…

This report examines the effects of increasing science course-taking requirements in the Chicago Public Schools. CPS has been at the forefront of the national movement to require a college-preparatory curriculum for all high school students. In 1997, CPS mandated that all entering ninth-graders take a college-preparatory curriculum in high school,…