This manuscript presents a scoping review of Biotechnology Education Research (BTER) over the last 20 years. BTER during this period primarily focused on attitudes and knowledge, typically using research design methods suitable for addressing questions about frequencies, central tendencies, correlations, and so on. However, to guide the development of educational practices that will increase and sustain students' motivation and interest in science in general and biotechnology in particular, BTER will need to adopt research design methods that support the inference of causal relationships from observations. Research will need to focus on students' interest and motivation, and its relationship with effective teaching and learning of biotechnology in the context of socio-scientific issues (SSIs). Such a shift will increase interest and motivation in teaching and learning biotechnology and will also help establish and maintain students' interest in Science, Technology, Engineering and Mathematics (STEM) because biotechnology is an important STEM subject. This in turn may encourage students to choose educational and professional careers in science, helping to meet society's current and future needs.

In biotechnology education research (BTER), the multifaceted construct of attitude has seldom been problematised in depth despite that the majority of studies in BTER during the last two decades have focused on students' attitudes towards modern biotechnology. Most studies on attitudes in science education use a single-factor model in characterising students' attitudes, while some use a three-factor model. By means of structural equation modeling the current study tested and evaluated single, three-factor, and bifactor models of student attitudes towards modern biotechnology. To further shed light on the stability of this model measurement invariance testing was carried out for groups; school-type, gender, grade, parental education and educational programme. The results showed that a three-factor model and a bifactor model showed satisfying fit to the student attitude data. The bifactor model were relatively invariant for all groups except for gender, where boys had a more positive attitude. The affective and behavioural aspects of attitudes were highly correlated why the bifactor model with its general factor and specific cognitive factor may provide a more sound explanation of students' attitudes towards biotechnology. The results indicate the importance of including affective and behavioural dimensions of attitude in biotechnology teaching. Further implications for practice are discussed.

There is a substantial literature in science education research showing that many students experience a lack of relevance in science education. For this reason, science teachers’ selection of content and the way content is treated when exposed to students for learning purposes is an important part of the problem. In this connection, research show that science teachers’ values strongly influence several aspects of teaching and learning science. Therefore, science teachers’ values are important to investigate, to be empirically informed and to be able to develop science education. Accordingly, there is an increased volume of research studies about teachers’ values in science education and their effects. The study presented here is part of a larger national exploration of biotechnology education in upper secondary schools in Sweden and contributes by showing variation in teachers’ values and relations with practice. Theoretically, the study is rooted in a philosophy of science recognizing the potential importance of teachers’ non-epistemic values. Empirically, it is based on surveyed upper secondary school biology teachers’ views of the importance of including value-laden topics in their science teaching. Their responses were analyzed by latent profile analysis and non-parametric testing, to assess the variation in their views and explore associations with several explanatory factors. The results show that the surveyed teachers could be divided into two distinct groups: one favoring inclusion of value-laden topics in their teaching and another (smaller group) opposed to it. The result also shows a variation in teachers’ selection of topics to teach and their teaching approach, as the former group were more inclined than the latter to include value-laden aspects in their teaching which contributes to the research literature. Furthermore, experienced science teachers were overrepresented in the group holding more negative views, a result not reported elsewhere in the research literature. The importance of the results is discussed in relation with the theoretical framing of non-epistemic values and points out the importance to further investigate underlying causes to science teachers’ expressed values and ways that they might vary temporally together with ways that they cluster, as they are shown to be grouped. The result is also discussed in relation with practice in being able to make use of the evidence to develop science education.