Science achievement of U.S. students has lagged significantly behind other nations; educational reformers have suggested science engagement may enhance this critical measure. The 2006 Program for International Student Assessment (PISA) was science-focused and measured science achievement along with nine aspects of science engagement: science self-efficacy, science self-concept, enjoyment of science, general interest in learning science, instrumental motivation for science, future-oriented science motivation, general value of science, personal value of science, and science-related activities. I used multilevel modeling techniques to address both aspects of science engagement and science achievement as outcome variables in the context of student background and school characteristics. Treating aspects of science engagement as outcome variables provided tests for approaches for their enhancement; meanwhile, treating science achievement as the outcome variable provided tests for the influence of the aspects of science engagement on science achievement under appropriate controls. When aspects of science engagement were treated as outcome variables, gender and father’s SES had frequent (significant) influences, as did science teaching strategies which focused on applications or models and hands-on activities over-and-above influences of student background and other school characteristics. When science achievement was treated as the outcome variable, each aspect of science engagement was significant, and eight had medium or large effect sizes (future-oriented science motivation was the exception). The science teaching strategy which involved hands-on activities frequently enhanced science achievement over-and-above influences of student background and other school characteristics. Policy recommendations for U.S. science educators included enhancing eight aspects of science engagement and implementing two specific science teaching strategies (focus on applications or models and hands-on activities). Focused implementation of these research findings could enhance both science engagement and science achievement of U.S. students. I identified five key limitations of my research project: the age of the dataset, the lack of racial/ethnic identifiers, the low proportion of student-level variance accounted for by multilevel models with aspects of science engagement as outcome variables, the lack of class-level measures, and the lack of inclusion of students’ epistemological and fixed/flexible beliefs. These limitations provide opportunities for further investigations into these critical issues in science education.

The major purposes of this study were to provide validation data for the Questionnaire on Teacher Interaction (QTI) with a large Australian sample and examine the relationship of teacher-student interpersonal behaviour with student sex, cultural background and student outcomes. The sample from lower secondary science classrooms in Australia consisted of 3,215 students in 158 classes in 43 schools in two Australian states, namely Tasmania and Western Australia. The sample was chosen carefully so as to be representative, though only co-educational classes were used in order to permit an unconfounded test of sex differences. Students and teachers completed a questionnaire which included the QT1, an attitude to class scale based on the Test of Science Related Attitudes (TOSRA), a cognitive achievement measure based on items from the Test of Enquiry Skills (TOES) and a five-item cultural background survey. The study follows the current trend in the field of classroom environment research of combining qualitative and quantitative methods. The qualitative component of the study involved about 100 interviews. This study is unique in that it provides a very large database of teacher-student interaction data in science classrooms and provides new insights into the relationships between teacher-student interpersonal behaviour with student sex, cultural background and student outcomes. The study found that there were associations between teacher student interpersonal behaviour and student sex and that there were differences in the way that students from different cultural backgrounds perceived their learning environments. Student achievement and student attitude to class were also found to be positively associated with teacher-student interpersonal behaviour. As a practical outcome of this study, the 48-item QT1 has been shown to be useful to Australian lower secondary science ++ / teachers as an initiator of self reflection on teaching practice.

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